My buddy put a 429 in his Jeep CJ

Since the motor was so huge, there was no room for a radiator up front, he ended up putting a radiator in the between the roll bars in the back (on the 45 degree bars at the rear). In the summer he ran the fans blowing hot air out, in the winter he reversed the fans and blew the hot air in (actually it was too hot, he ran a bikini top all winter, which was pretty funny). It worked well, never overheated. Only two problems, bleeding the air out of the system was difficult and once he had one of the copper pipes let loose inside the body, sprayed hot water all over him...