Hey,
I thought you might wanna read a bit about stroking a 3SGTE to 2.2. Seems not to be too hard, use a cyro-forged 5S-FE crank, a ST165 flywheel and clutch (same pattern as crank) and some custom forgies with some cyro'd rods. It'll be alot cheaper mating the 3SGTE to a W5* supra box than a 4A 5A 7A I believe aswell.
@10 PSI = 260 BHP
@15PSI = 323 BHP
http://www.koracing.net/stroker.html
enjoy :D