For what it's worth. I put my 416 together way before the craze was in full swing. My bud and I built ours with 308 swirl port heads (from a late '80s to early '90s wrecked trucks), worked/with 202/160's, porting/matching. A Mopar 508 cam, hydralic lifters, 1.6 roller rockers, Mopar M1 intake, Quick Fuel 950 carb. .30 over bore, 4.0 crank, 9.75 compression. Cars run low 11's to 10.80's all day long. Good luck.
