Heads selection help 5.9 magnum

turboking15 said

Have the heads pressure tested. Most are all cracked between the seats and run just fine. Especially if its just a rebuild / cruiser, youll be fine. Ive got 2 different motors currently running with known cracked heads.

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I was going to cam it and put an eddy intake and dougs headers. Think it will make a difference? Plus my machinest said the cracks will only get worse? Does speed master or EQ make anything? Their are Jegs heads but who really makes those? Thanks for the advice.