I always thought a dr650 engine would be great in a street bike, and the dr650 makes a good street bike, even if the style is newish. They are smooth and cool running, and with a few easy mods, make plenty of power. 360 pounds I think with all that suspension and a very strong frame, weight could be saved. Twin spark plugs allows high compression on regular gas, the motor holds plenty of oil, and besides the weak 3rd gear, a good motor, and street riding would be easier on a transmission... It would be easy to make a TU650. All the modern sportsters are small in size and very heavy, the rubber mounted motor frame added about 40 pounds I think. The new Bonneville is also heavy, the motor seems large overall, but the suspension is way better then the sportsters, both have marginal seats to get short people to fit. Somehow, the V7 classic is around 400 pounds, good for a 750 shaft drive bike, but I thinik its also on the small size. I just do not understand why they need to install such poor suspension parts on many modern bikes. Surely it would not cost more to use thicker oil in the shocks and get some damping, or give more then 2 inches of wheel travel. While damping is slim, the shocks on the TU at least have a good spring rate for solo or 2 up, sommething none of the others managed to do. And what is up with seats? There seems to be very few new bikes that have anything more then 1/2 inch of foam, and less for a passenger. From the V7, to sportsters, to the new Bonnevilles, the cbr250, and every dual sport, the seats all suck!