Being 67 and adjustable rockers, I'd say 273. But who knows, maybe they just put the wrong numbers on the side or front since 67 was the first year for the LA 318, but not in a Barracuda I think. 67-68-69 where the last years for the A-body 273s. At least it's got the good steel crank. Only one way to tell....

After looking at those rockers again, they look added, retainers are too big for the springs and they too look bigger than stock, then the aluminum intake too. Somebody's been changing parts. What's the head numbers?