J Truck cab mounts?

[AMCer]

Are all cab mounting points/spacing the same across all year and model J Trucks?

I guess I should ask: what cabs are interchangeable on J Trucks?

[rocklaurence]

Yes, I believe so

[Stuka]

To my knowledge, they are not all the same. The rear mounts on the cab changed, but I do not know the exact year off hand. It may have been '74 when the front suspension and everything changed. Or it may have been when they changed the wheelbase, which would have been in mid '67.

Its not the end of the world if they have to adapted though.

[AMCer]

Would it be much effort to fit a J10 cab on the different frame?

Or is it a complete headache?

[Stuka]

There was a post on here of somebody doing this, but I cannot find it. And I don't have two trucks side by side to measure. But as I recall, the difference wasn't that big. If you are inclined enough to swap cabs, I think you can figure this out.