depends on what you want.
if u want usdm tt motor and the 6 speed... your shit out of luck and are going to be spending an arm and a leg..
or go with a jdm 2jz(about 1500-2500) and buy an r145 tranny out of a turbo mkIII (about 500 bucks) and spend the rest of the money as u see fit.. i am sure u can find a set of used usdm from someone and then just snag a set of injectors and cams and your good to go.