I would like to get a set of these , because I need the longer reach . But because they would be going on my vintage Centurion Ironman I want to stay with the Shimano 600 levers . It says basically don't do it , but how bad could it be ?
Shimano Tiagra BR R451 CS57 Caliper Rim Brake Super SLR Dual Pivot Silver Rear | eBay