I just checked the current set up (set up for time trials).

The drop is about 13-14cm (measured to top of handlebars). Stem in 60mm. Frame geomtery for the old one is here ( http://gallery.roadbikereview.com/sh...89/si/Geometry ). The head tube is 160mm on the old bike - so my choice for the new is 175mm (would this be too high with the drop I have currently set up?), or 145mm. So my head tube can either be 15mm longer or 15mm shorter.

thank you for your assistance