There are adpaters available from a place in OZ. forgot the name... they have a webpage. The 2UZ is a great engine.... a 350w/ 4B carb won't touch it, save for price and easier to swap. :D
I'd go for the 1UZFE (the i-force is the 2UZFE cast iron block), which is the aluminum block 4.0L from the Lexus cars, 260hp stock, 6 bolt mains, roughly 400lbs, it would work nice. The early units are approaching 14 years old, so parts prices are quite reasonable. There are a series of problems...