Have to admit, these things look very slick built up. Found this example online:

s3.amazonaws.com/ibike/pictures/316821/IMG_0177_large.JPG

secretly I kind of wish I could have that built up, instead of my GTB. (Tell no one! haha).

 centre of seat post to centre of head tube is 54 cm measured horizontally. That's just with a tape measure and eyeballing it, so i guess opinions might vary...

 nice frame, what size?