probably your best bet, whilst the tl01 is cheap, would be the tc3...
its a better car, more parts support as its newer and its a good base for drifting!
the main upgrades would be drift tires, aluminium suspension parts, spring sets and gears to get your ratio's right. keep in mind u'll need batteries and motors (stock is the best for drifting, 27t rebuildable, motors like p2k2 or mvp or trinity monster horsepower)
u might like to check out the yokomo drift cars though. they sell a ready to run package for around $300 or so i think? could be wrong... but its purpose built to drift
hope this helps
Yokomo * HobbyWing * Sanwa