I am currently playing with the idea of starting a cottage industry buying old, steel frames and doing them up. After a recent visit to Argos Racing Cycles in Bristol where they had many beautiful refurb jobs on display I was inspired to trawl the Internet for unwanted treasures with a view to bringing them back to their former glory. My dilemma is whether to focus on frame & fork only or venture into full-build territory. If I go with the latter do I try to keep things authentic - e.g. keep the down-tube shifters - or do I use modern technology? My current preference is to go modern where possible but I'm not sure if this will find me losing those who want "classic" as well as those who prefer the more contemporary. Thoughts?