Quote:
Originally Posted by CounterSpace Garage
There are off the shelf header available to take on this endeavor, but it is severely dependent on what type of powerband is being used. For example, the ACE A-350 maximizes the factory FA20 powerband extremely well. At that point, we need to know exactly where you are planning to use the power and where you are willing to give up before making a recommendation. Thank you! 
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I had been thinking A350 or Anaconda 42.7mm, with the Anaconda 48mm if he really needed the ability to move a lot of exhaust gas. 9500 RPM is far enough outside the realm of normal usage that I can't even guess at his requirements. You guys are the experts though.