I put a new drivetrain on my 1997 Trek 750 this weekend. The original STX components looked great, but had some slop in them from use. On went some take-off derailers that I had from another bike, a very nice Sugino 30/40/50 triple crank, and an 14-32 7-speed HG50 cassette that I bought NOS locally earlier this year. It turned out nice and rides wonderfully still.
IMG_20181013_144601893 by
jnjadcock, on Flickr
IMG_20181013_144553437 by
jnjadcock, on Flickr
IMG_20181013_172223388_HDR by
jnjadcock, on Flickr