Blower kit, headers, CAI, custom tune and you will be pushing 600 rwhp with a manual.
The stock internals can handle all the power that would be usable on the street.
2011 SS IOM Vert. ECS Vortech 13+ psi, Water/Meth, 2800 stall, LT headers, Drag radials, Drag alignment, Cradle Bushings. Tuned by Ted.