where can i find 1985 front lisense plate bracket for cheap?

give www.autozone.com a try, but your real best source is a salvage yard. Also, find someone with a hollander's interchange manual, and try to find out what other makes/models will be swap-source for your MC.

Try looking on www.montecarloss.com. They will lead you to all the best SS parts sources

If you can't find one at your local salvage yards try eBay. And you might want to check your local "swap sheet"or other type of local classified newspaper. Most towns have these types of publications that cover a certain area and are filled with classified ads and want ads.