When you run a V8 radiator with a 300 inline six cylinder you have to fab your own hoses. I was able to trim the top hose up enough to get it to fit and then connected the 2 pieces using a piece of pipe.
The bottom radiator hose took the longest to get right, but I ended up using 2 stock 6 cylinder hoses on the water pump and radiator and then cutting the hose I had grabbed with the junkyard radiator and using it to connect the two.