So even with the new custom zip GregTech Doesn't work, however when you try to use the mod it says "If you want this mod get the Technic team to ask for my permission first."
So I want it and I know it would be an amazing addon for ic2 that adds tons of new tech and end-game weapons and tools.
So I (and anyone else who thinks it would be a good idea) am asking the Technic team to add GregTech.
If you don't know what GregTech is Check out this DireWolf20 Review