So, I've been keeping up with the 2015 STi steering rack swap thread on nabisco, and apparently someone has just completed this swap into a GD STi. So, I'm assuming it could be swapped into an RS using a GD front subframe. Thoughts? Has anyone even thought about attempting it?
How about THIS fitment thread for the MY02-04 which bolts up to our crossemember with minimal problem just the steering linkage would have to be changed from the directions and possibly inner tie rods. I'm seriously considering this for next years autocross season.
It also depends upon what lower control arm you have. GC or GD wagons have a narrower track width than GD sedans, and all the 08+ stuff, so without a more extreme shortening on the tie rods I doubt you'll get enough toe adjustment to be able to properly align the car.