Original Message

Ill say two different cars from two different years. Compare top and bottom photos.

Roll cage different. Rear wing dual mount vs single. Wing looks smaller in lower. 
Different intake runners. Air intake by drivers head vs upper pic behind RF tire. Look how close the guy in lower is sitting to cockpit. No side tank. Fuel tank looks like behind driver in lower. (after 73?) 
Janet was there in 1976. No Indy car expert here. Compare pics. I'm thankful you took pictures. Thank you.

As you were.......