I've got a complete KRC serpentine set-up that everyone is using on they're crate 604/602 engines. KRC part # 16312010. These sell for $682. in the speedway motors catalog. This kit comes complete w/ H2o pump, 1to1 pulley's, KRC pump, Mount, belt, and mounting hardware. The first $400 own's it. I've got great pictures to show how new these part's are.