Cant keep the car cool HELP

I'd agree with red about the thermstat. Failing that pull the water pump rotating assembly and have a look at the pumping vanes. I'd even go so far as to compare the vanes overhaul diameter and number to an off the shelf mopar parts pump. Could be a pumping problem. Also make sure that the rad hose coming off the bottom of the rad going to the pump suction has the coil wire inside to prevent the hose from collapsing when running down the highway.

Terry