GT-40 and Cobra lower intakes are the same. And the 5.0L Explorer/Mountaineer lower intake is VERY similar (only difference being the EGR passage and the ACT sensor pad on runner #5).
"Stock" (non GT-40/Cobra/Explorer/Mountaineer) intake runners are oval and inline.
GT-40/Cobra/Explorer/Mountaineer intake runners are round and every other runner is offset to the runner on either side of it.
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