Joel,
I'm sorry, Peak Speed Shop doesn't sell or port heads. We just port and sell intake related parts. We would be glad to port your L76 intake manifold and throttle body when you decide to do that. On a stock LS3 or L76 engine, our radical porting of the intake manifold gains about 15 rwhp at a cost of $370. At a cost of $25 per horsepower gained, this is one of the biggest bang for the buck modifications you can make. If we port your throttle body at the same time, it is just $75 more. You can find out more about us at http://www.peakspeedshop.com/
Bob Schustedt

Hey I'm building an L76 and I'm wondering wich are the best bang for your buck heads to get