H-Beam Rods

Could be a bunch of different brands. There are two, maybe three companies that make that Rod in China. They just end up in boxes with different names on them.

Verify the bolts are quality ARP bolts and not faked chinese copies, verify both ends for size and geometry and run them.
How old is "old"? Like YR stated make sure bolts are good, big and small ends sized correctly, have them maged. If all is good, run them.