I plan on doing a 4.6 swap into a fox sometime this year and still have some research to do on it. They make a kmember that bolts in a fox and accepts the 4.6 engine. The biggest part of it would be the wiring. You would just have to pull a manual out and trace your wires. The navigator motor is a 5.4 dohc motor most of the time, thats why its preferred.
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03 Cobra
06 F250
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