I have a 2001 Tundra and my rear differential it leaking through the metal. I'm in PA so rust is a feature on Toyota's here. Other than needing a new bed, the truck is in otherwise good shape. The frame was replaced under warranty and the engine runs fine and interior looks like it just rolled off the production line. My question is if I can find a relatively rust free axle housing is this a straight forward swap of unbolting the old one and bolting in the new one? I've been looking to replace it with a 2018+ Landcruiser but I'm waiting for used prices to get a bit more reasonable so I'm just trying to get as much life out of this truck as I can. We have yearly safety inspection here so I can probably only put a JB Weld band-aid on the problem for so long.