Brushless Setup questions for a G2R

[seaning]

I am building a new truck based around the G2R chassis. I am planning on running 14 cells for power. I am going to use the single speed tranny conversion kit, and the strobe slipper.

My questions are:

1. what would be better a BK Wanderer 8XL or a Lehner Basic XL2800 ? (with a 9920 controller)

2. What bore pinion does the BK take ? (1/8" ?)

3. Would a 14 tooth pinion with the 51 tooth ofna spur be right ?

4. I drove a firends emaxx with the HV-Maxx the other day, and I was really blown away by the amount of torque. Do these motors really have a noticeable amount of power over the HV-Maxx ? (if you've tried both)

I prefer runtime over top speed if that helps for what I am looking for.

Thanks