[COLOR=navy]I NEED A TRANS CROSSMEMBER 4 A 90 CAPRICE W/305 IT HAS BEEN DISCONTENUDE BY GM[ PLEASE HELP TOO MUCH POWER&TORQ NO SUPPORT/COLOR]

I have found a crossmember but I don't know if this is what your looking for. Check out:
https://www.chevygmparts.com/oe_parts_catalog.html
Then go to Body Parts, select year, make, and model. Go to frame on left, then frame and components, then frame assy, then brace. It comes up with a front left and front right crossmember.

Hope this helps