Quality parts availability seems to be getting a bit harder. I am starting to collect a few new parts for the years ahead to have on hand. In particular decent fuel pumps and distributors are getting rarer. What parts are you hoarding, if any?
I don't know about hoarding, but here's what I have on hand:
Crank position sensor, ecm, fuel pump, alternator, coil, serpentine belt, rad hoses, u joints, front axle shafts, and a few other odds and ends.
I pack these parts when I go out on long trail runs, along with the tools to swap the parts.