i'm just really curious as to know what will change over from the ef civic onto the crx and visa versa. is there a web page on here that has listed the parts?

more specifically can you put an EF civic front cross member onto a 90 crx si?

 

All suspension pieces are the same, except for the exception of steering knuckles and the differences there being wheel hub + bearing sizes, and in the case of the EX Sedan Caliper placement.

Anything from the Wagonvan is exempt from the prior statement.