That's a good running combo for sure but like you said it comes with a cost. High fuel costs, high RPM, original build costs, new and better stuff coming out all the time so we upgrade for a few hundredths, and constant rebuilds. Probably a big reason I'm dragging my feet on my 572. Mines a budget build compared to what the hitters are running and my income is going down faster than it is going up. Heck my Friends are running 4.60's at my local tracks 'heads up" series and drive them often.