From http://www.sheldonbrown.com/dura-ace.html we look compatible.
|Other 6 speed Shifter||6 speed|| Any 1997 or later Shimano Rear Derailer|
Any S.I.S. Rear Derailer
Except pre-1997 Dura-Ace
and Dyna-Sys series
|Other 7 speed Shifter||7 speed|
|Other 8 speed Shifter||8 speed|
|Any 9 speed Shifter||9 speed|
| Any 10 speed Shifter|
And I remembered this nifty trick too. Looks like I could have thrown a 9 speed cassette and chain on there with 10 speed shifters?!?!?!?!
Standard Cable Routing (A)
Alternate Cable Routing (B)
This alternate cable routing will also let you use a 10-speed shifter with a 9-speed cassette. This provides a convenient upgrade path.