I'm freshening the original 318 in my 74 2wd half ton (256k) and I'm considering installing a dual plane intake,4bbl, and simple dual exhaust with the stock manifolds, I know headers would help but I just don't want to deal with the PIA factor. So...my question is cam suggestions for this combo, just looking for something with a little to no lope, and more low rpm torque...any experience/suggestions welcome, thanks