GregTech Classic is a GT1 inspired rewrite for IC2 Classic 1.12.2.
Downloads are available on curse! https://www.curseforge.com/minecraft/mc-mods/gregtech-classic
The mod is released and finished, however I am considering a few more small updates.
Please report any issues you find to the issue tracker on this repository. Please provide as much information as possible including version and steps to reproduce.