i believe they are diff, there is supposed to be something about the 1.8 rails that you can fit in usdm sti injectors. and apparantly it's only the 1.8 rails that work, i have both sets of rails from a 1.8 and 2.2 so i will have to check and see how they differ. but i'm keeping mine for when i want to upgrade to larger injectors.
yes, that is what im trying to do. my injectors is at 95% with what im runnning right know.that is the reasom for the upgrade.
get yourself some BC/BF 2.2 N/A rails and they will fit the sidefeed sti yellows or pinks. SRT20DET sidefeeds also fit apparently. The turbo rails are cockeyed to the block whereas the N/A are strait. Ive got a set lying around untill i get some better injectors with the same thing in mind =). Make a post on legacycentral you should have no problem getting them for like $20 shipped. There are many posts there with plenty of info aswell