Overheating 360 new engine
Looks like the OP went off the rails with his project when he somehow decided he was going with the serpentine belt and pulley system.
It moved everything forward and now he is crammed on space, and is boxed into a corner with his overheating issue.
Should have left it a stock arrangement, they are good for added power and they keep it running cool.
Ma Mopar had it right, right from the start.