I'd love to see pictures from multiple angles of the Whiteline W63398 forward-most rear bushing.
I've been forced to do most of the same work your car has myself (Massachusetts Subaru dealerships suddenly refuse to install anything aftermarket and most Subaru parts [unless purchased directly from them at an unreasonable loss - Example - the Rack & Pinion cost me $580.29 while the dealerships wanted $1,983.92 for the part alone, plus $983.21 for the installation] while standing directly in front of a Subaru made poster of a WRX covered in Whiteline stickers [the very brand of parts which they used to install for my car. They are very well aware that I am handicapped [severe Tracheobronchomalacia, upper arm (Humerous) tops locked to shoulder cartilage]).
The Whiteline W63398 is what I've saved for last since the volume of rubber is large and the steel outside is 1/8" thick. I've already installed a new rack & pinion (because the dealership broke the steel line, leaving me with nearly no fluid to make it home with - On Route 91 South w/ speed limit of 65mph, causing the metal to grind away leaving it unrepairable since Subaru stopped selling the Rack & Pinion repair tools) with Whiteline KSR207. The removal/installer part 20099AE020 produces no results when searched for online. I'm going to check and see if the 927680000 or 20299AG000 & 20299AG010 I already have might be close enough to do the job.
Seeing that the W63398 bushings actually fits will be such a relief, as no pictures of as much are found anywhere online nor on Youtube.
Unfortunately I've not taken any photos of my car since I purchased it, so the sole photo is of it at the dealership just before I bought it in 2012 (but WRX's Outback in White but with clear windows and a Subaru Nav system sums it up). Still has less than 100K miles...
Currently installed:
STI Front Strut Tower Brace ST2050021000
SPT Turbo Heat Shield E771SFG500
SPT Front Lower Chassis Brace SOA8431120
Perrin Steering Dampner Lockdown PSP-SUS-565
Perrin Pitch Stop Mount PSP-DRV-101BK
Summit Racing Volcano Exhaust Wraps SUM-350212-1
DEI Exhaust Wrap 010104
DEI HT White Silicone Coating 010303
Other parts already installed:
Homelink Aurodimming Rear View Mirror H501SAG100
Subaru Armrest Extension J010AG000WB
SPT Side Net Kit (R&L) F551SAG100
SPT Rear Of Seat Net Kit F551SAG200
Subaru Remote Engine Start H001SAG100
Subaru XM Satellite Radio H621SXA000
Braille Battery B3121
Subaru Left Under Cover 56411AG05A
Subaru Right Under Cover 56411AG04A
Cusco 684541AN Rear Strut Tower Brace
Kosei K4R Light Grey Painted 17" wheels (the drop from the OEM 42Lbs to these 14Lbs wheels bumped my fuel economy up by 7 Miles per Gallon in hilly Massachusetts) https://www.tirerack.com/wheels/WheelCloseUpServlet?target=runWheelSearch&initialPartNumber=K4R040LG&wheelMake=Kosei&wheelModel=K4R&wheelFinish=Light%20Grey%20Painted&showRear=no&autoMake=Subaru&autoModel=Outback+Wagon+2.5+XT+Limited&autoYear=2008&autoModClar=With+OE+Metal+Valve+Stems
Front: Perrin PSP-SUS-121 25mm antisway bar with Whiteline KLC32 endlinks, Whiteline W0506 and W53353 front control arm bushings
Rear: Whiteline rear: KCA399, W63394, KCA307 and KTA124 (and soon enough W63398)
Front:
EBC GD972 3GD Slotted & Dimpled Rotors
EBC DP41661R Yellowstuff Brake Pads
Rear:
EBC GD7410 3GD Slotted & Dimpled Rotors
EBC DP41584R Yellowstuff Brake Pads
Front & Rear: BC Racing BCR F-07-BR shocks, springs and struts.
Will ("likely" for the parts I've had an impossible time having made so far) be installing:
Stainless Steel/Teflon Braided Brake lines (but every company has refused so far, with most of them hanging up on me the moment they hear the word "Subaru")
Aluminium Driveshaft and Aluminium CV Shafts (but yet again, every single maker hangs up on me the moment they hear the word "Subaru" so this will be a challange)
Carbon Fiber Front Air Splitter
Perrin Engine Mount Set PSP-DRV-050 (but I have been repeatedly told that the Legacy motor mounts will not work with the Legacy Outback motor & Chassis)
RalliTEK 5EAT Transmission Mount Insert Bushing (Hard, RTEK-112798)
Killer B HH4-1-SWAIN 4-1 Holy Header Coated
GrimmSpeed 003002 Ceramic Coated Uppipe (if only the ceramic coating was white to keep heat in the gas for better cylinder gas clearance)
GrimmSpeed 007098 LIMITED Downpipe Divorced Ceramic Coated Catted (if only the ceramic coating was white to keep heat in the gas for better cyl gas clearance)
Go Fast Bits 2014 Underdrive Pulley Kit
Spec B Aluminium front control arms
As many Carbon Fiber parts for the body front as I can find (help even up the weight distribution) including Hood, front quarter panels, front and rear passenger doors (and I think my fuel economy would be best served with a non-vented hood and a front mounted intercooler)
Mishimoto MMBCC-UNI-BK Baffled Oil Catch Can
Figure out if STI Front Support Kit ST20106ZR000 as well as STI Flexible Lower Arm Bar ST2051221010 can be used at the same time as the current SPT Front Lower Chassis Brace SOA8431120
Perhaps some sections of the Cusco bracing parts may be installed
Unfortunately I cannot go to a Spec B 6-speed manual as my car was born a 5-speed Automatic (but perhaps the Mercedes or GM/Ford new 8-Speed/10-Speed automatics can be fitted [ECU may make as much impossible])
David