Any B series engine will drop right in and Hasport makes a lot of mounts so you could probably drop an H22 or a K20 in.
Yes, It will fit a 90-93
yes
You can fit a 1.8 liter engine into your 1987 Acura Integra. You will need to modify the engine mounts and the wiring harness.
An H22 or K20.
No, 90-93 was cable operated, 94-up was hydraulic.
no
Yes it will fit
That engine would fit any Honda civic 88-00 with the right motor mounts, and will fit right in into any other Acura integra
Yes
Yes it will fit.
B series do not fit on D series motors
no the 1993 acura integra headlights will not fit the 1995 integra, 90-93 acura integra are more of a rectangle shape as to where in the 1994-2001 integras except the type r, have round head lights