2.6's arnt a very rev happy motor and the mitsi 2.0Ltr wasnt very happy with high revs either unless you spend a bit of money on them, Put a 4agze in it or a monster 5k, but since you want to drift 4agte ?
Twin cam for the win.
Putting a mitsubishi motor in a toyota is just NO.......... NO but its your car so do with it what you feel you want.