318 Cam Maybe Not

Not to hijack but the summit cam/lifter kit is on my radar for my budget rering and 4bbl swap. I'm thinking the k6901 and the enginetech 340 springs at rockauto. Is the k6901 too big for a 73 B body bigger tires and 8.25 granny gears. I think for the cost and recommndations the summit cams sound like a decent option.