If you're getting a TT-01 then to make it into a drifter you will need to get...

the ball bearing set,
aluminium propeller shaft,
aluminium motor mount,
oil filled shocks,
ball diffs,
adjustable turnbuckles
and ABS tires.

After you have bought all of these items then you will need to setup your car.

0 deree camber all round for ABS tires,
1 dgree toe-in at the rear,
soft springs at the front,
soft/medium springs at the rear,
fully tighten the the rear ball diff but not to far otherwise you will strip it,
tighten the front ball diff a littles less than the rear.

these are only the starting setup that has been successful for many people. From here you can customise the handling to you're prefrence.