I suggest getting a small parts box worth of wear parts in your arsenal.
I actually did, for the very first time ever.
I just didnīt think about getting a diff housing as spare. My 20-year(or so)-old M-01 still uses its original gear diff. Ok, it might be used only 5 years because at some point I put in a ball diff and I didnīt use the car at all for some years, but still.
