Any head Ford makes for the 4.6 or 5.4 (modulars) will bolt on to any 4.6 or 5.4 block. That's what they mean by Modular motors.
I'm not sure why you would want to put a truck head on a 4.6 block (a 4.6 head on a 5.4 block makes more sense), unless you are talking about the Cobra R heads which are based on a race truck head.
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