I haven't checked the breakers on here yet, but I had previously looked into ebay for one, and all I found was one. It doesn't seem to be in decent condition either (scratches and and missing a tow hook cover). http://www.ebay.com/itm/VW-Corrado-Front-Bumper-Cover-Assembly-G60-VR6-1990-1995-OEM-535-807-217-A-/231645744246?hash=item35ef298c76:g:MvwAAOSw3ydVxQX6&vxp=mtr
As for my location, I am in San Jose, California. There was a corrado in a junkyard near me a few months ago, but by the time I got to it the bumper cover was already taken.
I'm certainly going to thoroughly look over this forum for one, as I haven't been able to find one elsewhere.