Help me choose camshaft...

many years ago, 1982?, I did a Rustoleum rebuild on a low mileage(35,000 ish)1967 383. I installed a used comp. cams 470 magnum cam that I already had, engine was in a 1974 D150 P.U. with auto & 3.55 rear gears. ruck ran surprisingly well even with the 2-barrel carb I broke it in with & continued to drive with for about a month until I installed a Holley Street Dominator/ 3310 750 I also already owned.oh, also had headers.