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 offering the best overall power delivery out of all the ACE headers, the A-250 shifts the optimal powerband slightly north, the CS400 shifts the optimal powerband down, etc. 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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Well its a 2.3 liter stroker engine 13:1 compression and race cams
http://www.pipercams.co.uk/pipercams...d=SUBFA20BP320
I believe the power band down low will be fine with the compression and larger stroke. I need it to breath up top