well, I swapped out the freewheel (the original one is a clunker) with a 7 speed shimano, replaced the rear derailleur and installed some sexy gold sealed bearing pulleys in the derailleur, replaced the crank with a campy record 53t, dumped the plastic pedals, a pair of maxxis tires, and my brooks b67 saddle on top of a controltech post (i'm not a lightweight guy...)