the hop up you need on a TT01 depends on your budget
get the alu. dr. shaft and your all set
no need for a high speed engine cause drifting in done at low speed
the stock motor 540 is fine
you need good tires
get a 2 inch inside diametre PCV pipe
and fit them on any 26mm rims with two way tape and solvent
thats it
happy drifting

bouledegum