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I currently have a 93 gt with a 5.0 with an explorer upper and lower intake, 70mm throttle body, bbk headers and an x pipe with no cats. I have a set of gt40p heads that were heavily ported and have bigger valves. If i put those heads on, what kind of power am i looking at?

Also, ive been thinking of just doing a 351w swap. What do you think it would take to get around 350hp at the wheels and still not break the bank with either setup? Keep in mind i need to be able to sneak it passed the smog guys in CA. So anything of a stock 351 or 302 or with C.A.R.B. numbers would be nice.
 

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what kind of power do you have now?have you put it on a dyno?i dont know what kind of power those heads give out look it up.probably 30 to 40 hp at the most.if you cant take it to a dyno use a dyno software program like dyno 2000.it will at least give you ball park.and you can see if the windsor swap is worth it. is it a roller 351?just a suggestion.
 
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