I've been 1.34-1.37 with 002/003 and a snubber., best ever 1.31 all steel/stock glass 71 Dart with a good rb stroker. I wouldn't consider the 60's it's strong point though. It was inconsistent, and when wheelie-ing would go right. But it is cheap. It would body lift the left rear a good bit but hardly anything on the right rear. Which is why I think it went right by shortening /pulling the left rear forward.