front end has 35 teeth, the rear 34 teeth. moving only 1 spline 1 end makes for a giant (can't remember exactly but, it is shocking - like 3") of ride height change. need to work both ends to get the ride heights you want. read the factory method. can count splines, move bar to get new marks both ends and get durn near exactly what you want, first time.
if you don't have manual. email me and i'll fwd the appropriate info.
When I lowered my GT last fall, I read up on all the different ways possible and ended up doing it Goos Van Pelt's way. here is the link to the youtube video. straight forward and I am happy I didn't have to hurt my brain cells counting splines.