what cam??

hey guys, im needing a little advise. first ill let ya know what i have. i have a 72 duster with a 440. its a motorhome engine, std bore, purple 6pack cam, 10-1 comp, 440 source alm heads, performer rpm intake and a holley 750, 727 trans w/kit, 3.23 rear. what im wanting to do is go to a 12-1 piston, single plane intake, a little portwork. i like the way it runs but i want to make it meaner on the track but still be able to drive it on the street. not gonna be a daily driver but.....any ideas?