The parts are a direct interchange from one housing to the other.......sort of. You will need to go through the standard same process you would perform if you were changing the ring and pinion for example. Unless you win the lottery on a regular basis, there is no way the pinion shims for pinion depth and the case shims for backlash and case preload will be the same for both housings. That;s why there are hundreds of combinations needed to get those items right. The variations in the housings, cases and ring and pinion gears will all be compensated for when you "set up" the parts in their new homes. If you have done this type work, it's pretty straightforward. Lots of video on Youtube and the process is the same for any GM rear end other than the old drop out 9.3" rear. Inch Lb. torque wrench, dial indicator, some brass drifts. Very long breaker bar or pipe to tighten the pinion nut. Other than that, a service manual and basic hand tools and you can do it.
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