I always wanted to do this. So about a year ago, I started on the T-Rex. Now I lost count on which version I'm on. It's fast and can make a 45 degree climb from a stand still. But the power died months ago. I used the 4 in 1 from Esky and their 800mah 2 cell lipo. This is the model that started it all. Since then I've made 8 inch drifters and now moving onto 4 wheel drive.