mounts are 318 pieces with the mods to work with 340/360, don't sweat it, they're probably fine enough to roll. or buy some conversion/swap mounts, or they show up pretty frequently here.
don't sweat the oil pump drive. you can buy them new in both the std & HD flavors if need be. yours is the HD version. if the hex is clean where it engages the oil pump and the teeth/shaft don't exhibit excessive wear then i'd clean it up and and roll with it.