Rock Auto has most anything you would need and you could have it shipped in no time. geez, I needed rotors for an 07 Toyota and no one locally had them in stock. I carried spare engine cylinder coils when I owned the V-10, as was suggested by another mechanic. And a few sending units that were known to fail. I carry a serpentine belt in my Diesel pick up that tows my trailer and a spare fuel filter.
I still have those coils and sending units and two valve covers that were given to me that fit the V-10. . Anyone wants them pay the shipping cost.