I was in the Air Force in the early 1970's when Graflex Corp. went out of business. Coworkers had friends in the photo field. Being the company went out of business factory parts and service support were no longer available. The photo department was instructed by command to dispose of Graflex Corp. cameras via the salvage system. The salvage system regulations said the equipment had to be inoperative or the repair exceeding a percentage of the piece's value. Some shop chiefs damaged their Super Graphics beyond repair or removed parts before sending them to salvage for disposal. The upper and lower locks were common parts that were removed before sending the cameras to salvage. Not all bases followed this procedure but many did. There are a lot of bodies without the focus panels or the locks in the focus panels. Another reason for a body not to have a focus panel is the user removed it and used a Grafmatic or roll film holder then when they passed the estate person did not know what the panel was or what it fit and disposed of it.
Visit
http://www.graflex.org/ . Super Graphics are covered in the Speed Graphic section of the help board. I do not recall any substitute for the focus panel or its locks (arms) and springs.
The factory parts numbers are:
36079-G1 Arm Assembly, upper; 36079-G2 Arm Assembly, lower.