Old HP magnum 383-440 cam???

if you are being cheap, use a summit cam and timing chain. i went 12.30 with one with stock heads and 9.2:1, i think it would have went in the 11s with a looser converter, i only had an 11" holeshot. the roller chain held up great when i did a cam swap it was still as tight as the day i put it on.