Started building this over the summer. Its on hold right now until the Indian and Triumph chopper are done. The tank is off a 74 550. The stock Honda tank is so huge, making the bike so wide. I had a scrap 550 laying around and with a little work to the tunnel it was on. The petcock has to be relocated. The tail section is half of gas tank from a 70's Honda enduro. It worked out rather well and save a hell of alot of time compared to making one from scratch. Still lots of work to do.