I installed a Vintage Air unit in my six cylinder 63 C10. When I ordered the unit I specified vehicle and engine and the unit includes the proper bracket and everything needed for installation except pulley. I think I got the dual groove pulley from Speedway. The only other thing I added was a larger aluminum radiator as I thought the original in the truck was a little small.
Unit works great and no problems with it working with the six cylinder. In Mississippi, cold air is required for my better half to cruise with me.
