Even in the 3A, it climbs to 90 easily, more if I want, but I always worry about some ancient bit breaking and taking me out. Not that I could really name many ancient bits that haven't already been replaced with genuine high-quality repro parts from Taiwan. Merging on the highway is always fun with the top off, winding out through the gears and pulling away from the traffic flow behind you before slowing to legal speed. ALWAYS get waves from people as they slow to gawk then pass.
Of course, highway speed is easy with the HVDA, but I constantly work at keeping away from the other beasties on the road hanging on their cell phones, and not paying attention to the road. There is nothing to protect you in a TR3 if you get hit.