I’m new to this forum and new to the square body truck scene in a whole. I currently have a new project that I plan on beginning restoration on very soon. The truck is in pretty bad condition, but I plan to begin restoration beginning this month or next month. The only known mechanical issue with the truck is the fuel tank selector valve is stuck on one tank and a new one will be ordered. But i’m unsure if it’s a 3 port or 6 port selector valve.