Are the crossmembers and steering knuckles from CRX and Civics 88-91 all interchangeable. My buddy needs new ones for his 91 CRX Si. I know that he can't use HF or STD knuckles cuz they're smaller...but what about a crossmember and knuckles from a hatch (i know there's one at the junkyard right now).

 

yes on both.

 

with the exception of the sedans and possibly the wagons(ones with Power steering) Yes they are interchangable