i was wondering what would be a good swap for my 2001 subaru impreza 2.5 RS its a gc8 model, i would like to get a plug and play engine makes it a lot easier to swap....
here is some info that you might want to look over http://forums.nasioc.com/forums/showthread.php?t=386462
This info has been covered in several other threads, so a bit of searching might help you out. Also you should check out RS25.com there is a whole sub section devoted to swaps/turbo kits for GCs. Just to sum it all up. You can pretty much put any H4 or H6 Subaru motor into a GC. So figure out what you want / can afford and go from there. The EG33 or EZ30 are great swaps for the GC as you do not need to run premium gasoline and still get oodles of Tq. A good H6 swap into a GC should make it about as fast as an STi give or take a little. You may need to extend your front support to fit it in though. The EJ20 and EJ257 (WRX and STi) engines are also fantastic for swapping in, but require some more $$ for exhaust and turbo parts. A GC w/ a EJ205 should be comparable to an STi. As for the wiring, the way to go is to send out the wiring harnesses to Chux, East Coast Swappers, or Garage Tuning and have them do it. It will save you a bunch of time and the chances of it starting right up increase. good luck