We built a removable small back frame to hold the back tank in place. I wanted something small and gracious and I always liked the HPN tank.
You may notice that the back exhaust is hold in place through a bracket and 2 springs. Nothing new, a solution adopted by Guzzi with the Baja bike. The springs allow and dampen the vibrations. The back of the muffler is removable by removing the 2 springs. It can be packed accordingly so it be may be quiet or loud. I left it loud.
The back fender is an acerbis Baja. Note also the back shock mount. It is very different from the stock tt. It is braced and the shock is well supported by both sides.
Last i like the large handle that protrudes from the tank. I can hold the bike there and pull it if i need.