Judging by the picture I would say that they're not braze on (pics at the bottom)- however the derailleur is easily unscrewed from the clamp with an allen wrench...couldn't find anything online that seems to match what i'm looking for. So a shim it is I guess?
I just ordered a cane creek s3 headset and tektro cr720 for front and back since I couldn't find a site that had oryx and read better stuff about them anyways.
1. Rear derailleur is a shimano ultegra 6500
2. I was thinking of going with shimano "s6" bar end shifters with nine-speed on the back - the shifters say they're compatible with 8 or 9speed and you can shift one of them from indexed to friction which seems pretty cool.
3. The crank is a specialized 42-32-22.
Thanks for all your help guys - this forum is totally great. Also wondering what handlebars and stem I should go with - pretty ignorant about both.