My dusters. Numbers matching 75 factory 360 4bbl 727 with factory high stall, 8.25 with 3.21 gears and a sure grip. Factory dual exhaust. 41,000 original miles. 74 duster race car. 470 stroker, 727 with trans brake, 4200 stall converter, Dana 60 with 4.10s and a doctor diff spool and axles. Kim