well actually.. there are a few vq37 turbo kits out already..
i know AAM came out with one but they're in the east coast up in maryland i think. its about 10495 if i recall..
heres their website. oh and also
gt motorsports has a kit too, i think theirs is a lil cheaper cuz thats without labor.. idk for sure check those out.. im sure theres a few out there just gotta dig a lil deeper