After looking at old photos of the belt and pulley arrangement it turns out that I use the second groove on the pulleys. I found a pulley set for the crank, alt. and the water pump. The problem is they only sell it either in a Underdrive Ratio (88%), or HF High Flow Ratio (1:1) , and I'm not sure which I want. I have a high flow water pump already on there, and don't know what underdriving88% would do to water pump or alternator, vs. the 1:1 high flow setup? Help? Thanks.