Originally Posted by Berodesign
The things you have to worry about are basically BB and headset. So, use a caliper and make really good measurements of those parts. Then you go to
www.sheldonbrown.com and look at his glossary for threads, bottom bracket, headset, french threads, english threads, bla bla bla and then you will figure out what you have. Also measure fork and frame dropouts with a steel ruler.
When it comes to group sets, Dura Ace is nice, but Ultegra is alot cheaper and if you move back a couple of years then you can get NOS really good Ultegra stuff. Atleast the derailleurs, sprockets and hubs should be NOS. When it comes to sprockets, try friends bikes and see what combination you want back there.
There is no Voodoo involved here. It's english thread BB with either a 68 or 73mm shell width. HS is either standard 1" or 11/8" threaded or threadless. A measurement of steerer tube OD determines size.The T500 designation makes it a touring frame. Dropouts are 100/135 and it takes 700c wheels,and DA or ultegra wouldn't be the most appropriate call for the intended use.