Check the head tube lenght. TT bikes tend to have shorter head tube lenghts than road bikes. You'll either have a huge drop or too much stack height. Don't know exactly what the head tube lenght is on a CAAD7 but the C9 in a 60cm is 190mm vs 150mm on the BMC. I just went through this on a Fuji SST. I ended up with a 6.25in drop, 1.25in over my normal drop.
Last edited by El Diablo Rojo; 03-05-09 at 06:08 AM.