x2 that, when you get in there and notice they are leaking get new ones. If you have done a VCT ford before makes sure you have all the tools cuz it can be a little tempmentla if you miss align the cams.I say leave the cam and crank seals alone if they are not leaking. Replace the valve cover gasket due to the low price. But the cam and crank seals do not get removed when you do a timing belt. If they are leaking, replace them. Oil on a timing belt will make it fail very fast, and that gets expensive.