ah here we go...
RB20DET red top
1986-1987: 178bhp (NICS version)
1988-1989: 190bhp (ECCS version)
RB20DET silver top
1989 onwards: 214bhp
now just to figure out the exact differences... see how much of a pain it'd be to swap.. or just hope i can find an 88 200zr so i don't have to mess with any of it
i also read the turbo's are different, but i'd most likely be going to a t3/t4 combo once i do swap out the turbo so i'm not too worried about that... only pain will be finding intake/exhaust manifolds... but these can be fabricated... i'm thinking i'll be doing a lot of fabricating with this car... oh well, a professional welder for a friend is good thing to have when you're looking to fabricate