At long last, everyones favorite. Its here!
(I have been given full permission to upload this)
This is now a community project to fix with all of the Garrys Mod updates. Pull requests, issuies, they can all be filed. Tommy228 has permissions to accept & deny pull requests along with more permissions.
Lets all bring this addon back to life!
Github link: https://github.com/MrUnknownGamer/TTTUpgrades