i have 2 tamiya tl01, one is my drifter, and its almost stock, only thing i did was put in ball bearings, carbon drive shaft, and new esc, the stock motor works wonderfully for drifting (except if it is worn out) and you just use the stock slick tires, with about 5-7 layers of electrical tape, and i can do feint drifts, and long full speed drifts, i would reccommend getting a higher tourqe motor, like a reedy quad mag 19t motor, speed tuned gears arnt for drifting, but u can get them, and do NOT get ball diffs (kind of obvious) and with the gear diffs, just open them up, and stick in some silly putty to lock them ( it can be easily removed).

www.rcdrift.org
my drifting forum that i visit a lot