we have two 1980s vintage treks and are trying to figure out whether it makes sense to retrofit them or buy new bikes such as the Rivendell production models. One is a 1982? 600, 531 db main tubes and nice craftmanship include rack braze ons on the upper rear stays. The other is a 1988? "tri series" with even nicer lug work, also 531 db main tubes and chromolly forks and stays, but no rack braze on on upper stays. Frames are in good condition. Should we spend the $500 to $700 per bike to get triple cranks, new gearing, wheels and wider bars with tip shifters. (Shifters now are on downtube) We could even spend another $300 on Joe Bell paint job to get the lug work highlighted and personalize each bike and that would be well below the $2,400 for a complete Rivendell production bike. Our plan is 30-50 mile rides to hotels and b&Bs with loads of not more than 30 lb. Are these old trek frame worth anything on the vintage market? Thanks for all thoughts. OCJERRY