Thinking about an LS3....

[Schwartz Performance]

What Trans are you planning on?

I would go with the crate LS3, probably the 480hp version. There's no reason to build up one from nothing unless you do it yourself, when there is a crate motor out there that suits your needs.
We sell a lot of the LS3 480's and a bit of the 525hp too.. The 525 moves the torque and power to higher RPM so I wouldn't recommend it for you.
If you'd like any pricing on GM Performance parts feel free to PM me or email at [email protected]

Thanks
-Dale