If he wants a vintage bike, I've got a 79 Paramount - 26", which is 66.04 cm. I think it's probably ok for your friend, when I worked in the bike show, I set up an identical bike for Jim Chones (The 6'11" former NY Net), and I'm 6'2".

Whether or not he's interested, where is he at? Add your location to your profile and comments may be more helpful.