With the exception that it's a CAAD4 frame, that looks like it could be a 2000 Silk Road 400 - which is shown as a CAAD3 in the catalog. The 400 had mostly Tiagra components with Coda crank and brake calipers and CXP11 rims. CAAD4s originally had 1" head tubes (35 mm OD), but later ones may...