the 1zz and 2zz are very much the same motor , the head and intake manifolds as well as pistons and valves are different. same motor family/group , same displacement , same block same mounts if i remember correctly.
the 2zz is ok but is torqueless , slow to get power , basically a honduh wannabe.
the trd supercharged 1zz has the same hp , with buttloads more torque.
The 1ZZ-FE is a better motor, esp. the Gen 2 Dual VVTi (VVTi & VVTLi). they also respond well to Forced induction. I think that you'd have to replace the front subframe to get the motor mounts correct & then custom fab up the hoses, Fuel lines & wiring.
Overall a nice choice, If they do bring it here, I might just have to trade up.