I got a d15b7 that i bought for $200 and i was looking into buying a 91 civic si hatchback and i was wondering what would i need to make this possible

 

if the Si motor was bad then all you would have to do is replace the old short block with the d15b7 short block. use all the old intake manifold setup, exhaust manifold, distributor etc. on the d15b7 and your set.

 

the si is only a shell

 

Multi port fuel injection manifold, engine wire harness, ecu, and dist.