Ya i guess it's basically the same motor as the supra turbo ,but with after market turbo system,there is a bunch of 5-700 hp cars on you tube. YouTube - 732hp Lexus IS300 dyno run‏
i never knew these even existed, they would probably make a nice daily driver/sleeper with an auto + quiet exhaust,I wonder how the tranny's + rears hold up.
I have two cars with the 2JZ motor, an older SC300 and an IS300. One of them's getting a turbo eventually, probably the SC300. I don't think the auto trans in it will cope very well but there's a nice bellhousing adapter available for a Chevy trans.
The BMW 335is caught my interest awhile ago. Ive had the opportunity to drive the 135, 335, and 535. The 135 is the quickest outta the bunch and is a tad slower than the V8 powered M3. Its just a little too small. The 335 is actually kinda quick. 325hp/332tq outta the box.