If you do need to rebuild, a new 8.8" LS 31 spline carrier is $240 from FRPP, or clutch kits can be bought for about $50. If you're not confident setting the pinion depth, most decent shops can have it done in a day for < $200. There is another option; Ratech makes a solid pinion spacer that eliminates the crush sleeve. Arguably the better way to go, but may require more times in and out with pinion shims for whoever is assembling it. But, once it's set, it's set...with a crush sleeve, you run the potential of squishing it too much during setup and not achieving proper bearing preload during final assembly...
