I've seen one done. IMO, it really doesn't seem to flow well with the lines of the CRX. But if you are set on doing it then no one will stop you. Since not many have been done, your best bet is to find someone who has done it that can tell you what you need and how. I don't think anyone here has done that one.

I would like to see an EG Civic coupe, or hatch, front end conversion. I think it would be a cleaner look than any other hybrid-type front end conversions.