i just did a swap. put a 95 ls engine in a 92 civic. you do have to get a different motor mount on the lower drivers side. the one that the ac bolts to. you need one off of dohc delsol or a 99-00 civic si. you also need the throttle cable out of the integra also!
the swap you are messing with is an obd2 while the civic is obd1.

you will have to add a 2nd o2 sensor after the cat if you are going to retain the obd2 setup.

i would fix up the teg and look for a ls or a gsr swap out of a 94-95 model. direct plug and play!

no re-wiring is involved.

just my 2 cent. hope it helps!