I recently purchased a 1975 CB550F that was supposed to be completely restored. It turned out to be a mostly cosmetic restoration. Unfortunately, there were quite a few problems with the functionality of the bike in addition to poorly done cosmetics. (Never buy without inspecting the bike. This was an eBay purchase). I have fixed most of the problems except the gas tank. It developed leaks from multiple pin holes on the bottom of the tank. Whatever he used to initially repair the tank seems to have dissolved. Since it needs repairs and a repaint, my painter suggested trying to find a good tank that didn't need repairs, just painting. He is not sure the tank is repairable and it costs $100 to dip it just to see if it needs further repair. (He also does restorations, mostly of Brit bikes).
Over the last three months, I have been trying to find a good tank. So far, no luck. Does anyone know what years and models use the exact same tank as the 75 CB550F? I want to do a correct restoration (which is what I thought I purchased).
Any help would be appreciated! Thanks....