Looking to beef up the driveshaft. I'm running 402 in 02 camaro with A4 and stock 10 bolt with 3:43s, vig 3200. I would like to up grade to the hevey duty u joints and yokes. but from what I've seen there is no upgrade for the 7.5 rearend. Next year I hope to upgrade to 12 bolt (if the 7.5 lasts that long), and would like to reuse the new DS if possible.