Hi and welcome!
I’m new here too and everyone is really helpful. I’ve found a ton of information for my 2005 GEM E2.
I just finished a lithium conversion and it has helped tremendously with weight and speed. My GEM also came with the 7.5 HP motor so I’m hitting 36 mph on the flats. I would highly recommend getting those batteries from @Inwo. I think @LithiumGods might have them too.
Here’s my conversion thread: 2005 GEM E2 Lithium Conversion
I followed @LithiumGods’s thread for help with my conversion: Gem Lithium conversion v3.1 . Drop in?
Just search around on here. There is lot’s of info.