I have a 91 integra will a h22 fit

Question

can i fit a h22 in my car? what modification would i have to do

Answer 1

WHY AN H SERIES ENGINE? GO WITH A K SERIES

Answer 2

You can swap it in but you would have to get mounts and ecu.  You would have modify the engine and wiring to run obd 0 or 1.  You can run an adapter plate to use your stock b series transmission.

Answer 3

mounts and a new ecu. however doing an h22 isn't as viable as a k motor swap. most people did h22's before the k motor came out, and people still do it for accord swaps. but with the new k series out and many people swapping, it's a good investment to swap a k motor preferably k23a those are monsters. if you wanna go force inducted these motors are made for it  you can be running 12 psi on stock internals which is great