Read the thread about the 6K drag car... really good suggestions there...
A Supra is not ricey... it's a straight-6 with twin turbos capable of running insane hp... 500hp is fairly common... 600+ isn't unheard of... and OMG, they have torque!
Imprezas are kinda expensive in the parts dept... but hella fast when done right. Same with other awd imports like Eclipse/Talons or rwd imports like RX7s, 300ZXs, Supras, and 240SXs.
Just don't buy a Honduh... be a responsible azn and eat your rice, don't drive it.