Regular Schaller M4's would be good enough IMO and fits 7/16" holes. I don't know about EB-0's but some late 60's solid headstock EB-3's came with those (I own one). I suppose they started using those on the last ones in the transistion period after they redesigned the headstock to split versions. The mounting ear for the screw on the back is positioned differently than original Gibson M4's though.