I'm looking to sell my intercooled whipple setup. Its making over 516rwtrq in my Denali with stock internals and no mods other than JBA headers and a Corsa exhaust. PM me if interested.

 

Go for the bigger supercharger! You say you only want 6lbs but thats famous last words. I only wanted 8lbs with my procharger but now im almost at 12. With a good tune you'll be suprised at how much boost a stock engine can handle. Give yourself room to grow. Good luck!