Hey, I have a 90 Si engine and I want to know if I can put it on with the 88 DX tranny. The only problem that I see, is that the clutch is 20mm larger on the Si... If I swap the flywheel, and clutch to the DX tranny will I be able to run this setup? Or, If I swap the DX flywheel to the Si engine will this also work?? I need help... I have the full Si engine, tranny and axles, but If I could run the DX tranny for now until the Si tranny is fully rebuilt it would be easier, and it would let me run the car until I finish my other project (turbo GSR) I need some help with this... give me all the info you can... Thanks!!!