I gotcha....the car will do more streetin' than anything else. The pinion angle will change is what you are saying...so I should definately use shims to correct? So since I am not looking for such a hard hook the other will be better suited.....and yes the holes are atop each other. Does one hole change the geometry of the pinion angle? Thank you very much for your response
Darryl
I have found no difference in holes. I can 60' the same in the lowest or now the highest hole. That is not much of a factor in the 60' on a SS Spring car.