The 89 CRX DX im looking at has absolutly nothing as far as the interior goes. Do I need to have a CRX dash? or will a civic/integra dash fit?

 

Sure you could fit another one in, but it will take some work. Like making new brackets and other things. This post https://honda-tech.com/zerothread?id=384641 the guy is doing one, talk to him and see what he says. Maybe he will help you out alittle. I know some people who have put integra dashes in there crx, and I heard if you are good with welding and you can add some brackets it won't be to hard.