Hey guys, please forgive me if this is a repost. I came across this thread when reserarching how to replace my CV axle and wanted to add where I found replacement shafts for cheap. Can be ordered from O'Reilly Auto Parts (or picked up if you have one local) in the folllowing: (my specifics were for a MY06 Legacy)
2.5i, LGT, spec.B -- Front NEW: PN SB8047 $74.99, reman: PN 60-7355 $64.99, rear reman: PN 60-7372 $89.99
all with limited lifetime warranty. MUCH cheaper than OEM and from a professional mechanic friend of mine, very good parts. He said in fact that these parts were probably made in the same place that makes the OEM ones. And at these prices, it doesn't make sense AT ALL to try and rebuild a busted boot.
Just for your information though, there is a list of 47 compatible vehicles that match that CV shaft... so it seems to be a widely available shaft for subys.
Again, sorry if this is a repost, I didn't read all 24 pages, but this write up is invaluable to this project and I want to thank the OP for his contribution. I look forward to fixing my car and cleaning up the grease off my downpipe to get rid of the smoking and burning smell.