This update allows you to adjust the gear ratios used by the transmission, under Vehicle Tuning.
Also, I actually uploaded the correct vehicle transmission this time. Please disregard version 1.1, which was an exact copy of my Burnside transmission. These mods all live in the same folder on my computer, and as a human, I sometimes make mistakes. If you downloaded 1.1, please delete the file and resubscribe to the mod.