Not too similar to your combo but we have been a best of 10.35@130 with our 3800lb '69RR, 2.1/8" TTI's, 4" collectors and only 2.1/2" pipes to the bumper...motor is a mild 10:1CR 589ci wedge, dyno'd@695hp, track hp with mechanical w/pump/alternator full exhaust, we lost approx 20hp

Last edited by rb446; 07/25/21 10:56 AM.
1969 'Cuda 446ci, best 9.96@133.9 in 1990
1971 340 'Cuda, best 11.01@122.8 in 1987