Here's a tip about Ford fuel pump eccentrics. The two-piece eccentric yields less friction than the one-piece. The outer ring on the two-piece is free to float, which means less friction. This is the Pioneer Automotive Products P10-PF113/114 fuel pump eccentric for small-block Fords, which is available from just about any auto parts store. If you live in Los Angeles, Mexico Auto Parts can get you one.