I may not be of much help with the Tekno v4 D8 specific layout until I get home to take some pics, but I recently built one of these using a Tekno v3 chassis using parts bin from the D8T/D8/vorza/lightning/hellfire.
My current setup:
- 4S A123/Castle 2650kv setup... for now
- 3.8" Trenchers - 6.9" in diameter and are heavy...
- mech brakes to take some load off the motor
- 5.4kg of awesome