Just built and installed bars (spring loaded) on a 71 Duster. Overal length is 64 inches. Caltracs, split mono leaf, rancho 5 way, transbrake, 3330 race weight, 10 oh to 10.20

I would like to know where to set the wheel height on the bars (at least a general idea). I have been told that i need almost 12" of height. Any truth to this?


Thanks!