This has been driving me nuts for two months now!! I came across a three or four core radiator for 4th gens on ebay a while back.I was not aluminum but it seemed to be good qualty for around $200. I talked to the guys that manufacturer them and it just seemed perfect. They were in the mid west I believe and they were big on Jeep and Ford V8 conversions. Thats all I remember but I cant find them no matter what key words I use in Google. HELP PLEASE