Sorry for all of the questions guys but I just have a few more. First would stock 351w heads due the trick for my 347 or should I put out the money for some aftermarket ones? Second for a street/strip application would idle to 5500RPM or 1500-6500 RPM be a better option. Been looking at cam/intake combos and trying to figure out which would do me better in the long run, I am in no hurry to build this motor so I want to do right. And if I do need to buy Aftermarket heads what would be a good choice for a ford, I have heard AFR are good but unsure.

Thanks to All