i know from various dynos we have done that there is 50-60whp in a JG edelbrock manifold. it makes the turbo spool faster which means more midrange power.

the stock manifolds are too restrictive when your talking about this much power. also , like i said in Spoolins thread, there is NOBODY making 550whp+ with killer midrange an top end power, it cant be done, you must trade 1 for the other