Now here is a thought I've been pondering. My Magnum heads would give me a little better ports, little bigger valve, smaller valve stems, more lift and faster ramps on the cam due to the 1.6 rocker ratio, more compression because it's closed chamber (though open chamber heads flow better). There might be a shot at getting into 12's just with these heads....????? Imagine a 2.76 geared, stock tranny/converter, stock 360 with mag heads clicking a 12.99 ???