That 650 Turbo It's definitely a beautiful machine, but! (there's always one🙄), is still a 40yr old bike and Honda frames of that vintage where not the best for high power/speeds, kinda like the one year wonder 1983 CB1100F, super fast bike, but had the shimmy, bad. I owned a Gpz750 Turbo for 2yrs got new in 84, the best turbo bike of that era, but it had it issues. The turbos kinda discontinued themselves, as normally aspirated large bikes had similar or better performance with less complexity, easier/cheaper to mass produce.