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Idahome
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The OBX headers are a copy cat of the TMH, can be found cheaper and their build quality can be questionable
They are made from cheaper materials and the coating is not as high quality. However if you get them cheap enough this is a great option
The FMS manifolds are not really a performance shorty header just a manifold that Ford produced for a few years that flows better then the stock block hugger manifolds. Good luck finding a set of FMS manifolds...they are pretty rare these days but DO pop up online for sale.
Which ever manifold you decide make sure you get good gaskets so you onlt have to install them once.
I have seen OBX headers priced from $350-750 at the $350 price I would consider them, if you have to pay over $500 for them I would save a little more and get the TMH
Whatever you do just know this
the factory explorer exhaust manifolds are choking the power your 302 can make, without replacing them with something better your 302 will never make more power then stock. Robert of Torque Monster went through heck to get his headers a California CARB certification years ago and when he did they gained 24+ HP just by bolting them onto a stock 5.0 Explorer........ As far as power adders go, $850 for 25 hp is money well spent
Last edited on Tue Jan 14th, 2020 10:11 pm by 410customs
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I build custom RBV, specializing in drivetrain conversions, wiring, suspension and complete custom trucks