When I was in the Air Force, one of the guys in the barracks needed money and wanted to sell me his 71 Polara 440 car that used to be an Arizona Highway Patrol interceptor. I got it for $200! It had a 4 core radiator that I immediately put into my 69 Charger 440. The day after I bought it, the guy and his friend were camped on my doorstep begging for that 4 core. He had a 70 Challenger 440 and needed the extra cooling. Great memories!