Mine:
Pioneer DEH-880PRS
I used a steel mounting sleeve, which is standard with any aftermarket radio install, and I also used a sheet of ABS plastic to help get better results. This may be the way to go if you don't want to get a new bezel for some reason.
My concern would have more to do with the wiring. Seeing how bad the rest of the job was hacked, I can't imagine much more care was taken with the wiring...