I'm stripping a damaged 1994 Trek 2200 frame and adapting the components to a 2001 Giant TCR ONCE frame. I'm old school and anything other than quill type bar stems is new to me.

The Giant steering tube is 1" diameter and the bars I intend to use are 26mm. Being I'm not prone to opting for the most glamerous parts I've found a stem for that combo from Bike Nashbar and even a shim on eBay to fit my 26.2mm seat post to the 31.6 tube.

Anyway my questions: Is there basically a standard/recommended stem length for a properly fitted 53 c-c top tube (horrizontal center of seat post to center of steering tube is 55cm). On my mid 80's bikes w/ 53 top tubes I used a 90mm stem, but I'm thinking 80mm on this frame, what say you? Next question, I assume the stems have a standardized steering tube clamp height, is that correct, if so how much space does it cover? Last question, where can I find a headset cap for the 1" steering tube?

Thanks in advance, SKeown