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My main question is how much horsepower can a stock 2005 4.6l Mustang GT engine BLOCK hold? I know the internals WILL NOT LAST with the horse power im am trying to put down.. I was thinking of going with a livernois motorsports forged internal package, a kenne bell mammoth @ 25 psi, stock ported heads, performance gaskets, and a whole other supporting mods hoping to make 750-800 RWHP
 
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