i'm setting up my 4.88 gears in my D35 rear. I bought a G2 install kit, supposed to come with carrier shims, ring gear bolts, pinion shims, thread locker, seal, pinion nut, crush sleeve and black rtv
well, the black rtv didn't come with it when i bought it so i called 4wd.com, they gave me a credit for a small tube which i purchased locally.
the ring gear bolts that came with the kit were only 7 of them, you need 8
now, the ring gear bolts weren't torquing more than 75ft.lbs., did a quick comparison and here's what i found:
they were grade 8 (6 lines) and not grade 9 as the stock ones
the head was 9/16 hex instead of 11/16
there were no locking ridges on the backside of the bolt
so i ended up using 4 of the stock ones and 4 of the G2s, stock ones torqued at 90ft.lbs, G2 at 75ft.lbs - i would have used all 8 from my old ring gear but i cut 2 of them to use as studs when dropping in the ring gear onto the diff (i know you're not supposed to reuse them but they are still better than the new crap i got from them)
and the carrier shims are smaller in diameter than what the stock ones are (almost same diameter as the bearing cup), these are probably 1/16 smaller than that - i had ordered a full set of carrier setup shims so that's no big deal now but if i hadn't would have been no fun.
and back in the day I also ordered a set of G2 30 spline cromoly axles, one of them was way out of spec on the splines so i returned them and got a set of Alloy USA - cost me an extra $50 to ship them back.
that's my rant, never will buy G2 or Genuine gear or whatever they call their stuff, pretty lame products - that's my experience with them.