I'm not sure if the crank diameters are the same for the 4.6 and 250.
The 4.6 hub is definately shorter than the 250 so maybe a spacer would work. I didn't try it to see if the 4.6 would work after I saw one at a Ford display. It didn't look very close to the 250 one at all, so I just dropped it and found an aftermarket vendor for one.
The hub for the 300 one is the same as a 250. But it would install closer to the timing chain cover than a 250 one. But it would probably still work. And it you use a spacer than that would solve that problem.
Will
The 4.6 hub is definately shorter than the 250 so maybe a spacer would work. I didn't try it to see if the 4.6 would work after I saw one at a Ford display. It didn't look very close to the 250 one at all, so I just dropped it and found an aftermarket vendor for one.
The hub for the 300 one is the same as a 250. But it would install closer to the timing chain cover than a 250 one. But it would probably still work. And it you use a spacer than that would solve that problem.
Will