Originally Posted by SurfDog

1. You would need new seals for the stub axles

2. you would need access to a variety of bearing shims (unless your existing ones just happened to exactly work 20% chance I guess)

3. Diff oil to refill after the swap

4. The bearings are in good shape and already pressed on so are fine to reuse.

5. A NISMO diff cover is a direct swap, and only 120 bucks from Z1 and since you have to pull the cover anyhow for install, is probably a good cheap cooling upgrade.

I'm guessing, 20 bucks for seals, $400-500 for install. ($120 for better finned diff cover if you like)