I used to own a 69 roadrunner 383 4 speed. The 509 purple shaft cam is a sweet cam for any big block mopar. I also had a 73 dart sport. I built a 500 inch stroker, 14.5 diamond pistons, edelbrock victor heads with max wedge ports, erson special grind cam, 1050 alky dominator, 391 gears, 727...