Ponsse Buffalo mod v1.3 Envelope from Spintires MudRunner. Powered by Spintires The Original Game v 1.3.7 and Spintires 03/03/16. Mod Features – Ponsse Buffalo has 5 of its add-ons, 3 of its own trailer and 3 standard trailer. Version 1.3 for SpinTires (v03.03.16): Added missing textures.