*Do the 88-91's doors,are they all interchangable? No, not without alot of work. 88 doors are unique because they do not have the seatbelts mounted in them like the 89-91's...lightest doors on a CRX.

*I have a 88 DX civic hatch, I hve a set of skunk2 coilovers and would like to use those on the crx,can that be switched over? yes

*Also what rear disk brake conversions go for the 88 crx's? SI? rear disk?
Can gsr suspenion be put on the 88 crx's? find a 90-91 crx Si and swap the rear brakes...the control arms on your 88 are the same as the ITR ones and a one year wonder on the CRX (88 only).

*Can the 91 crx front and rear bumpers fit on the 88's ? yes, there are minor differences in the slender rub strip that goes around the car but will bolt right up.