Should be relatively easy.. I'm *fairly* sure the power plugs will be there already for the seat heaters (does the 2.5i have heated seats?).
The seats themselves will bolt on, just make sure you get the correct rear seat (wagon vs sedan)
edit - I got 2007 LGT cloth seats onto my 2006 OBXT LTD. My car had heated, power driver and passenger seats, the cloth seats are heated but manual on the passenger side. Everything plugged in just fine except the power plug was different on the driver side. I cut the plug from the car and replaced it with the plug from the donor car. I think the difference was a year thing, should be the same in your case..
Last edited by TiagoSantos; 11-26-2015 at 10:57 AM..