I'm getting a 92 b18a a/t complete swap from my buddy for free and the only thing i'm paying for is for the ys1 m/t tranny. do i have to change the flywheel or is it the same?

I hear that for the swap u need to convert from dpfi to mpfi. but i have a 90 civic si hatch and i think is mpfi. So what do i need to do? Someone told me that all i need is the ecu jumper from obd0-obd1 and that should work. I want to do it right so please let me know.....thanks