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?
The head numbers are 2658920 with the correct 67 date code. The motor had a LD4b manifold and Mallory Dual Point dist added but the cam is original. Can the adjustable rockers be used with the hydraulic lifters and cam?
