10 1/2 inch clutchs and flywheel were used on 67-88 318's and steel crank 340's, 68,69,70 and 71's. Big blocks also used 10 1/2" flywheels on some of their builds. So look for Barracudas with 318's and 340's Darts, Dusters, Vailants, Demons, some pickup trucks (light duty 318's) any a body with...