hey, i just put a new engine in my car (92 stang ) and the stock intake was cut in half fully ported and polished the heads were also ported fairly big it has 10:1 compression 540./.540lift cam forged pistons rods were shotpeened and lightened and the crank was turned but as for the heads and intake i was surprised at how much power they made especially with stock injectors fuel pump and maf, so i say if its cheaper ,go head and do it.
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