I recently got a 78 project maxi. someone did a half-ass replacement of the petcock with an elbow (marked "CHINA") that has no off/off switch, and they ground off the end so the fuse hose can fit (in photo it is covered with a cap). i can't tell how it is secured to tank, I don't see any JB weld around it or anything. I'm scared to try to remove it because it doesn't leak now and could get damaged. I added an inline fuel shut off.
the other thing is a question, there are brackets on each side of handlebars (center of photo) that have nothing attached to them, not sure what they were for? maybe turn signals or mirrors?