A body header choice PLEASE HELP

MoparMagic0069 said

Its a 30 over 340 and I have a decent size cam to put in it, I was just looking to get the max that i can out of the cam once its in and everything.

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I would still leave the manifolds until you start getting close to 400hp, I have TTI's on a car that went in without a dent but every time I work on the car I wish it still had manifolds.