NEVER use credit cards!
i was reading thru chevy hiperformance and saw an ad in the back advertising radios for muscle cars that mount in the stock holes or without cutting the dash. the model numbers of the units they offered up are "USA-1 or USA-2 etc" .. these are models of radios "made" by custom Autojunk. stay away from them they are junk. better would be about the same quality (poor) for $70 from jensen out of summit or you can still find the Kenwood units for @$200 from different places like for examply www.performanceyears.com a pontiac site.