I have a Trek 1400 with Shimano 105 components. This is an older bike with down-tube shifters, which I hate. I did upgrade to a 9-speed cassette anticipating the change to STI. What will I have to replace to make this conversion successful? Will I have to buy new front & rear derailleurs? What about brake components? If someone can walk me through this, it would be greatly appreciated. I'm mechanically competent, I just don't know what all I need to buy.
Thanks everyone!
Thanks everyone!