Attributes . Use with electronic throttle bodies. This kit is not designed to replace the OEM pulleys in a Corvette; rather, it is designed for installation in street rods, muscle cars, and some engine swap applications. A proper Hub is required for use with this kit and must be purchased separately. 69.00 in. belt length. Camaro/Firebird requires Hub MCH-355. Corvette requires Hub MCH-358. LS-7 requires march hub MCH-356, . Names