Stupid Cam Question

!st,do u know the specs on cam? the intake and exhaust lift? since it is used chk the lobes with a micrometer too see if consistant and no flattened lobes, if that chks out good then it should be ok to use, next if lifters are not pitted and has what appears to be surface oxidation then clean and polish them and chk for wear unusual concaveness,or wear patterns do not use sandpaper,use regular steel wool or synthetic to clean ends,air blow any derbis and wipe off with a clean oiled rag and oil the cam and lifters lightly,since it is a used cam it has already been broken in and assuming they were the same lifters it was broken in with I would use them with some lube on bottom of lifter as u install them onto cam,done this many times with good results...this is my opinion and u'll find many who disagree with the lifter issue concerning what lifter came off what lobe which in ideal situations should be the way to do it,but if this is not the case then chk everything good and if it chks out use them, and the zinc is a strongly recomended item in todays crappy oil when u assemble engine components, as far as valve springs stock ones have alot to be desired if the cam has more than stock lift,chk ur cam specs for spring recomendations and use accordingly...and if u have doubts concerning lifters then get new ones....