i have a 91 civic hatch with the d15b1 engine and i just found a d15b2 its my first engine swap and i need to know if the intake on the b1 engine will fit the b2 or do i have to use the intake and exhaust off the b2 and if i do use the manifolds do i have to get a new wiring harness or can i use my stock one anything that you guys know will help thanks again

 

I did this swap on a '91 CRX DX (same as your setup), and used all components from my old engine. (distributor, manifold, injectors, starter, alternator, etc.)
It started right up and runs great.

 

now i know the b2 has a different intake but as long as its the same dual point all the connectors are the same right

 

If you say so. I don't know what you have with the new engine.
It shouldn't be difficult to make the B run.