What are you planning to show as being resupplied?
Nebelwerfer units also had a specific version of the SdKfz 11 kitted out as an ammo carrier - AFV Club produce that as well.
Also depends on where you want to depict the dio. The trucks had a hard time of it on Russian roads, so the tanks had to go to them. Halftracks and such were used for immediate supply to deployed tanks in Russia when the need arose, but mostly trucks were used as these were more economical. They were cheaper and faster to build, and could transport heavier loads than the horse drawn carriages.