Top tube is 22" and 1/4" approx c to c (560mm)
Head tube is 6" approx but that's with and FSA Orbit Headset (150mm)
20" from BB to Top tupe (510mm)
21.5" approx from BB to Top of seatpost (550mm)
Mesurements are approx but the bike is definetly under 22" from BB to Top of Seat Post. Bikes seem to have been bigger back then.
Hope that helps