Jody, for your G plus take a look at Lucky Bob's. Click on BSRT'S High Performance Armatures. You'll find High Power Armatures like we use in MM/PS for $8 to $10 and Custom wound Arm's that go for $35. Also while your there take a look at Wizzard Gears. There might be something there that you are looking for. As far as hopping up the 4 Gear chassis. Try one of the Mean Green Magna Traction/ Tjet Armatures Part # AML778 that can be found towards the bottom of their home page under "AURORA ORIGINAL T - JET CHASSIS & PARTS". These Mean Green Armatures will make your Stock Auto World cars fly for $4.69. Also I'm not sure if you seen this tip for adding braids to your pancake cars. Adding braids is a great way of getting more HP from your cars while not spending a bunch of $ www.psychoslots.com/index.cgi?board=tdrt&action=display&thread=141 .