This was using the wallace site using the 60 it gave these stats take that for what it is
60 Foot 1.31 330 Foot 3.78 660 Foot 5.95 660 MPH 114.30 1000 Foot 7.82 1/4 Mile ET 9.42 1/4 Mile MPH 140.59
Mike as you know my junk is not as fast as yours but here's my thoughts on it.
I suspect the converter is on the low side of the sweet spot
and it will like the shorter tire (gear change)
Also with the shorter tire you will be raising the ladder bar angel slightly