I looked at my 63 and there appears there may be room to mount it in front of the radiator. You'd probably have to remove the grill in order to work on it. Mounting is going to be a bit of PITA as there is only a piece of channel on each side of the radiator. It's either use spacers or bolt to the side of the channel. I know the electric fan we used in the race trailer to cool the generator was either push or pull. Hope this helps.
Larry
68 C20 327 daily driver
63 C20 292 Camper truck
65 C10 ? Custom Cab AC,PB,PS,$flasher
