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The Schumacher headers are what I'm going to use for my car, just a puny 400+.030. This test helped convince me that I'd probably never notice the difference. Andy F made 550hp with 470" a mp.528 cam and stock HP manifolds 
I have that magazine test mule motor Andy built in my car. He had upgraded the cam to a bigger Comp grind. I downgraded back to the 528. What a great cam (gave Andy the Comp cam back). I have TTI's on my Challenger and am going back to manifolds with big headpipes. Headers are a pain cause even the TTI's rust and look like crap. IF someone made SS headers I'd be all over that but I don't have the time or $ to have a custom set made. I'd even go for some SS shorties
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