Its hard to beat the Weiand street TR with the D shaped ports, I ran a solid tenth & 1.1/2 MPH quicker over an M-1 single & 750 PF carb, & that was with minor tuning on 2 crappy 600 1850 holleys. On top of that, my 60ft. fell off by .03-.04 on the runs from the added torque & lack of a good suspension, plugs were stone white back in the pits.

Ran a 10.87 @ 123.58 on a 1.628 60ft. with TR

Ran a best of 10.98 @ 122.09 on a 1.58 in same air.