Well the xl5 has no drag brake but would work it would be fast with that 12t motor. The ezrun could work well if its sensored just turn on the drag brake for it. The 8.5 motor would be vary fast tho so you would need steel transmission gears. Also metal drive shafts and you should put the battery up front instead of the rear like it says when building the dingo. The servo may strip gears so you would want to get a high tourk metal gear servo.