Transmission Pack V2.5.1

Transmission Pack This mod adds 10, 13, 18, and 20-speed transmissions ✔ Multiple 10-speed transmissions ✔ Multiple 13-speed transmissions ✔ Multiple 18-speed transmissions ✔ Multiple 20-speed transmissions Changelog: tweaked the differential ratio for the 20 speed semi-ultra transmission Credits: trainguy_modding