The VQ35DE can handle a 150 shot, but I wouldn't recommend it. That's pushin' it. Like many have already said, these cars don't respond well to bolt ons. There is a guy on my350z.com, though, who is all bolt-on, no spray and runs 12.9's. And I know a guy w/ a Greddy twin turbo setup putting 440ish to the wheels who runs mid 11's. It definitely takes more than bolt-ons and some spray.