I have gotten a 88 crx not sure if it's dx or si, but i was wondering what parts can i use from the 88 crx si/dx into my current car which is a 90 hf? The 88 crx has everything. So what parts can i use to fit into a 90 hf?

for example, front bumper, back bumper. . . interior door panels maybe? and so on.. .?

 

How can you not be sure if it's a si or dx..??

SI models have a SI badge on the back of them and nice seats and a mpfi d16a6...
Also all SI models have sunroofs..
And "CRX" is embroided into the door panels..

and DX models have no badge on the back and have ugly *** seats and a dpfi d15

If it was a 90-91 then basically everything would be interchangeable..
But since its a 88 and you have a 90 then only some parts are interchangeable..
ex..Hood,bumpers,Glass,carpet,motor ****..etc.. etc...
Cant use the moldings(90-91 have thin moldings and 88-89 have fat moldings),or seats,or clusters..Cant use the rear suspension since 88's have the eye ball shocks and 89-91 have fork shocks..
Also you cant use the door panels since the 88's and some 89's have pillar mounted seat belts and the 90-91 and some 89's have door mounted seatbelts..

Some one else will add info..