what fits on an ITR ?

i have a 90-91ish TB i was gonna get bored for the R manifold, but im not sure it will work. its not one of those 92+ things is it ?

and what about the fuel rail ? i was gonna grab the first used B one i could find

The TB will work just fine. All b-series TB’s are swappable. Even the h-series TB’s will fit on the b-series manifolds.

I am not positive on the fuel rails. I havent swapped many of them around before.