I got the Procomp/Speedmaster 2 piece aluminum T cover for my build. The whole front comes off to allow u to remove the T chain and gears if need be. It looks pretty stout. I have a cam button from 440 Source. Kim
Did u ever get around and look at that big block pump pulley to measure it ??
Need a single groove 2 3/8'' deep , ''front to back'' , smaller than 6 15/16'' ----------------
