I'm trying to rebuild a bike using most of the parts on my current one, but swapping out the frame (since I hate its shape & riding position) and 650 wheelset for 700s.

This weekend I bought a cheap Nishiki with a frame I really liked, hoping that I could transfer most parts. BOY am I schooled. Nope nope nope says the LBS. I have a Campy Veloce BB and shifters. So I'm wondering how to go about finding a 48-50cm frame that will more likely fit the gear I already have?

(the bike I have now was someone else's semicustom build Rodriguez - super shiny but I want to change it up - I would rather find a simple stock frame to build it up... any thoughts? am I nuts?)