Neat!! Maybe just a little whistle or whine to give things away?? I had a bud in the Navy who had a four door with the Twin H and a three speed in it and the only thing he had done to it was to split the exhaust manifold for duals; I had a '57 Chevy with a warmed over 235 Stovebolt, mild cam, three carbs and a split exhaust, and we were always digging at one another. I truth, there was no contest; I could get a length on him off the line and in the first one to two hundred feet, but then he'd just "barge" on by and leave me behind.