Help me please....I need to fine a way to get the two inside bolts off the heater core cover off without taking the fender off....I'm in trouble here. thanks cliffss427@aol.com

You don't mention year, but on 68 - 72 you can remove the inner fender panel. If it hasn't been removed in a long time, you may break a few nut plates, but replacements are easy to come by. Try to get some WD40 on the bolts and it may help break them loose. With all new hardware I can pull either inner panel in 20 minutes.
rick