Sold alongside its Valiant sibling, the Duster added a two-door fastback compact car to Plymouth's lineup through the end of the muscle car era. Despite its small size, the Duster could be optioned with 318, 340, and 360 cubic-inch small blocks nestled between its A-Body frame rails. Whether you're turning heads at Moparty or turning on win lights at the drag strip, we have the parts to help you bring home the bacon.

Hays Twister Full Race Torque Converters feature an anti-balloon plate for use with nitrous, superchargers, and turbos. They are designed to accommodate any mixture of modifications including higher compression ratios, aftermarket camshafts, aftermarket cylinder heads, lower gear ratios, and vehicle weight loss.