A 630 solid roller and 1000cfm 4150 carb would make a difference if you ever want to go that route.
I'm getting ready to fire up my new 500" Duster build, it has MW cnc Eddy's and an Indy single plane intake. I'm WAY undercammed with the solid 557 purpleshaft but I don't care cuz I built this car to cruise, and it won't even have enough tire or suspension to hold this much motor anyways.
