I have the same problem Jerry. I'm 6'2" and 110kg (i need to lose a few kgs) so I don't fit alot of smaller bikes. Or is it they don't fit me? Remember, the factories built bikes to fit their rider(s) of choice.
As for the one bike that I must have..... I don't think anybody has ever made it yet. A big bore XR500 motor in a 1984 CR500 chassis would suit me nicely for a pre85 weapon.
Hey, I just love Honda 4 strokes and building my own bikes