Looking for a new single speed, CANNOT make up my mind, and then something pops up right in front of my nose. I have a 2003-2006 Bianchi SL Reparto Corse aluminium frame with carbon forks, and thibkibg about the idea of making a dealer do a Conversion to single speed, thereby making a Pista concept / Super Pista - like bike for a great price at least for now. Are these conversions a good idea, or NOT? Its based on a bracket of some kind converting the rear drop outs to go with a single speed set up.