I agree with Tony.
It's possible to put any M series engine in (including the 6M-GE) but it is
tight and requires a lot of custom work (which equals $$$ and frustration).
And all that front end weight will make it handle around corners like a three legged pig.
A modern engine like a 4 cylinder 3S-GTE would produce more power for about the same amount of custom work and would handle better.
I'd stick to the 22R turbo option.
Find a 22R-TE ECU or buy an aftermarket ECU.
Even without a turbo, a modified 22R can produce quite respectable HP.
I have some 22R engine details at
http://ourworld.compuserve.com/homep...pho/eng20r.htm
- Stepho