Hi,
I’m a new to the forum and just bought a 2002 Gem a few months back and wanted to upgrade to a larger motor. Does anyone have any recommendations on where or who I can buy a motor from? I’ve already tried calling/texting and emailing Marlon at MZ Motorsports, but never heard anything back.
Ride Four Fun Their motor fits in the space with no suspension modifications,
You will have to add a disc brake kit from Nevs Accesories The stock GEM brakes aren’t good enough for high performance use.
Rodney
Thanks Rodney! I’ll check it out.
Just notice the same User Name.
You asked about programmer and MM on Ebay. 
Welcome to the forum.