That bike was built by Tony Reynolds, and is a true work of art. It is a gorgeous machine, and I can only imagine how she runs with the Viper engine. I have owned 2 Boss Hoss V8 bikes, and ride mine almost everyday as a daily ride. Mine is only 385 HP, and it is one of the smoothest, most powerful vehicle I have ever had the priveledge to own or ride/drive. It actually handles really well for it's size, and we ride on the "Tail Of The Dragon" often, since we live 40 minutes or so from there. Mine has over 51,000 miles on it now, and we ride many trips of over 1000 miles a day, and it is very comfortable. I am sure the Viper bikes Tony has built are a great ride.