My old pump gas street and strip Duster with ladder bars and coli overs like the bottom hole for the best reaction and 60 ft. times. It had four holes and came from the chassis shop in the next to the top hole, I never moved it up to the top but I did try the lower holes and had the best results in the bottom hole
Good luck, keep it off the back bumper, no matter how many people tell you big wheelies are really cool
Shoot for and tune for the best 60 Ft. and reaction times