No but a 9-speed might. 8-speed Dura Ace is it's own animal but I think I read somewhere that it's spacing was the same as 9-speed everything else. I've never tried it, though, so if you spend the money and it doesn't work, don't blame me.

Your question about index shifting brought back memories. I'm a retro grouch. When index shifting came out I thought "What could possibly be the big deal?" When I bought my first index shifting bike I made sure that I could convert it to index shifting on-the-fly when it drifted out of tune. It only took 5 miles into my first ride before I was sold. "What have I been missing?" Now I'm a retro grouch the other way. I don't mix and match 7-speed and 8-speed stuff because the cog spacing isn't exactly the same and the indexing doesn't match up closely enough to suit me.

Oh - and what I said about index shifting - I had the exact same reaction when I got my first STI equipped bike.