J.W. Performance Rear Support GM Powerglide Billet Aluminum RG30003XL and an oven bonded aluminum

and an oven bonded aluminum core to provide efficient cooling with the lightest weight possible

BBK tuned Length headers offer improved scavenging waves for better combustion

differential

Racing is where Flowmaster began

J.W. Performance Rear Support GM Powerglide Billet Aluminum RG30003XL and an oven bonded aluminumProduct Description: Governor Support Billet Needle Bearing Hardware Included Aluminum Gold Anodized Powerglide J. W. Performance Transmissions is a manufacturer of automatic Transmissions and component parts for circle track, drag racers, off road racers, street and strip enthusiasts. J. W. Performance Transmissions, Inc. began its operation in 1976 with one goal in mind: To provide the highest quality product and customer service in the business.