HPI rs4 sport 3 drifting mods?
 

I just got a sweet package deal that included a RTR hpi rs4 sport 3.
I had assumed it was a E10, and was going to sell it, but once I realized it was the rs4 sport 3 I figured I'd keep it and do some drifting.
I already ordered adjustable camber/steering links an some 46.5mm dog bones for the front.

But doing some google searches has not show any good mods for increasing the steering angle, or for doing a countersteer setup.

Anyone know if there is a pinion/diff gear that will drop in and give the rear more wheel speed than the front?

Or know of any parts or DIY setup that can give more steering angle?