starting to put the car back together. i wanted a stronger u joint strap for the rear. the only ones i can find that measure the same for my 8.5 are the ones for a 12 bolt rearend. no one that i have found sells a specific 8.5 u joint girdle. do the 8.5 and the 12 bolt share the same size pinion shaft? i ordered the one for the 12 bolt and got it the other day it seems like it might work but hate to find out the hard way. thank you for any help.