The Pioneer 1.5 din units are nice, I run the DEH-P47 in my 9C1. I cheaped out recently on my wagon though. I got a din Pioneer (P3500?) and went with a mounting kit. I use that car more and wanted the smaller faceplate and some of the features more than anything.
Anyway, Metra makes a mounting kit (#99-3300?) that I used. I hade to elongate all the holes on the sides to get it to fit perfect but all in all I am happy with it. I only had to trim minimal dash plastic behind to get it to sit flush. You should be able to buy that Metra kit at any Circuit City or Best Buy.