i bought on of these from ebay, it was the cheapest sensor based combo i could find (payed $95 incl shipping), will give it a try as soon as i get some new batteries! its the 5.5t motor
the esc is quite large, the size is like novak gtb, and its fits like a glove in the Tamiya TA05
its hard to get the wiring clean on the ta05! just dropped the esc and motor in the car, will tighten it up later