I will let you know, I do know I have to modify the way they will bolt up, and I am going to raise them an inch...gain an inch in diameter, so this will give me 2" and cross my fingers I pass inspection...if not, so be...I won't raise them any higher...because of my windscreen...now this will not help my @ the drag strip...they want a cage...I might save the cardboard out of the Xmas paper this yr and fashion one, paint it blk, maybe they won't notice...