Did you decide on a motor yet and controller for sure?? I am going to get my 1521 hooked up tomm hopefully and see how it does on the MMT if I get my motor clamps. I hope its got enough juice to push my truck to 70mph or so. Right now the biggest problem is finding tires to do big mph runs on.
I'm using them now.....had two blow outs so far....always split on the edge of the tire close to the rim
Did you buy the premounted ones? That's the same problem I had with mine. My next set will be done with some tape on the tires and that should help them a little.