i know alot of people are thinking flomaster, i have some personal test data on my 73 valiant, 360 built to e58 specs, 8.5 to 1 comp, 2 1/4 exh, 1 5/8 hedders, 2.94 surgrip. w/walker dynomax it ran a best of 14.18, with flomasters it ran a best of 14.70. test were done a week apart, test conditions were the same. i put the dynomaxs back on it ran a best of 14.15, i have used nothing but dynomax since then on my last two carsAJDUSTER72 said