65 Barracuda 318 Rebuild, Cam, timing, lifters maybe a kit?

What do you like to do with this car/engine? I ask, because if you change cams with a low compression ratio, you have to pay close attention to what cam you choose... .you can hurt low RPM torque very easily with the wrong cam in that engine setup.

100% agreed with everyone else on the chain... replace with a double roller. It may be wise IMHO to get one that allows for adjusting cam timing, depending on your answer to the above question. Like this: Mancini Racing Double Roller Timing Set

If you change cams, you MUST put in new lifters with it. Old lifters are almost 100% guaranteed to destroy a lobe, or lobes, on a new cam. But putting in the new lifters is trivial at this point.

Pushrods and rockers (on the heads) are very likely just fine if everything was running smoothly and no odd tapping noises before you pulled it apart.