Yea I also asked and I got that same price, thats American too. And they said around 40 bucks shipping which isnt too bad. Though I was surpised that it only has a T3 exhaust flange instead of a T4 one. But I guess they don't think people would throw huge turbos on them, but they did say there was plenty of metal on the flange to grind and re-drill to fit a T4.
I guess you gotta weigh the options. Having something that both turbo and wastegate can bolt too without much fabrication or making or getting a header welded up to work. I guess it depends on price if you coudl do the work yourself. I know I could make that for cheaper then 595.00 but then I could just buy this and bolt it up.
