I had to put a rear intake manifold cross over to get the coolant flowing in the rear of the block and put a puller fan on the radiator with a custom fan shroud. I run the sandwich plate
oil cooler which is also ducted through the front. I live in Arizona and if I stop at a light too long above 100 degrees the car will still overheat.
There is just not enough room to put in a radiator that will cool 429ci @ 550HP.
but if you run across something let me know. My car stays cool in 110 degrees and anything above 40 mph.
Look at my pictures I tried pusher fans, pullers, both... you name it my current solution is the best.