The lexus swap is common in Oz but has never really caught on here in the US. If an auto is used it can be done quite cheaply. Like I said before the best thing to do is get a wrecked car so you have everything you need. They are very strong motors with six bolt mains. If you are interested in this look at lextreme.com. I also have a thread in the project section here.

Someone mentioned the 7m I had one in my old 4runner. They have a reputation for head gasket problems but I dd and wheeled mine for 2.5 years with no problems. They don't have the best low end torque but are much better than a 22r. They really shine on the freeway and will pull any grade in 4th gear (5spd). The best thing is they are a very easy swap and pretty much bolt in place of a 22r.