Sometime in the 2000 model year, production switched from a 3/8 inch pitch chain to an 8mm pitch chain. The switch required changing the cam spockets, crank sprockets, chain, chain guides, chain tensioner arms, and chain tensioners. Use the camshafts to dictate which components to use. If you want to use the 8mm pitch cams, swap over all of the 8mm timing components as well. None of the fasteners changed BTW.
Additional info. The 3.0L Lincoln LS has another set of timing components. The chain, chain guide, and chain tensioner arms are unique. Unique means that the Linc. LS 3/8in pitch parts are different from the regular Duratec 3/8in parts. Same story for the Linc. LS 8mm parts.
I highly doubt that you would be able to press off the old cam sprockets without damaging them. Then you would need to press them on the other cams with about 1° accuracy.
