Here is the Davidson as purchased:

1990 Davidson Impulse by vonfilm, on Flickr
Here is the Davidson as redone:

Davidson Impulse Redo 004 by vonfilm, on Flickr
Shimano XT and 11-34 9 speed cassette on 105 freehub:

Davidson Impulse Redo 006 by vonfilm, on Flickr
Campagnolo Race Triple and 105 Triple FD:

Davidson Impulse Redo 013 by vonfilm, on Flickr
Coco inspecting the results:

Davidson Impulse Redo 017 by vonfilm, on Flickr
Panaracer Tires:

Davidson Impulse Redo 007 by vonfilm, on Flickr

All work was done by my favorite LBS, The Peddler. These guys are great!