I know almost nothing about differentials, but I have an R200 w/3.90 gears out of a 1980 2+2 that I'm looking to put into the Z. The ring gear looks great but the spider gears show some galling. I talked with the local diff expert and he says he can't get the spider gears. I searched the web and can't find a source either. Courtesy says they are NLA. Does anyone know where to get replacement spider gears or the whole shabang including a rebuild kit?

Did you have the diff guy look at the spiders? They don't do a lot of turning compared to the ring and pinion so it might not really be too bad.

Steve

I know almost nothing about differentials, but I have an R200 w/3.90 gears out of a 1980 2+2 that I'm looking to put into the Z. The ring gear looks great but the spider gears show some galling. I talked with the local diff expert and he says he can't get the spider gears. I searched the web and can't find a source either. Courtesy says they are NLA. Does anyone know where to get replacement spider gears or the whole shabang including a rebuild kit?

Cheapest route would probably be to get a whole diff and tear it down for the spiders. If you're lucky you might find someone who just installed an LSD and still has the open carrier. Might check on Hybrid Z since I would guess there are more LSD installs going on over there...