Removed the 440 with a 727 attached from a 1976 26' Champion class A motorhome.Next is to install a 6BT,allison 545 and brownie OD.It will be REALLY tight,but going to install the bus radiator and shutter front.Might there be any issues using this large of a cooling system? Assuming the thermostat does it job everything should be just fine.Thanks in advance.