That was a 450 nighthawk. It could get ~180 km/tank with the valves adjusted differently but it was way more fun the way I had it. Way more power, pulled all the way to valve float, could power wheelie in the winter, good times, terrible fuel economy.I feel your pain. I did something similar on my 1982 Honda 450 Nighthawk. No windscreen and no earplugs - I was deaf by the end of the day. At least it could do around 160km - couldn't imagine 120km range