Would anyone be able to tell me what the head tube lengths are on a 03 Bianchi Volpe for sizes 58 or 61? I am trying to figure how tall these bikes are at the top of the headtube to determine approx. handle bar height. The brochure I have vaguely suggests the top tube slopes up 3 cm but does not say which model. Does that mean a size 58 slopes up to a 61 by the head tube? If I knew the head tube lengths, it would make more sense since I know how long a canti fork is. The shop clerk does not know either but I can order one anytime I want. Not much help there. I emailed Bianchi 2 weeks ago, but no response yet.