1969 340 is down

After removing the spark plugs and doing a compression test one cylinder was zero, #3 I believe (second from the front, pass side). Removed the value covers and low and behold the rockers appear to be out of place. (See pictures). Anyway I'm pulling the engine and going from there. Just wondering what the membership has to advise. Thanks in advance.
The odd numbers are on the driver's side, so if it's on the passenger side the second hole is #4.