I have a Fuji mountain bike that I bought back in late 87 or early 88. It has a 6 speed uniglide cassette. When I can't find a replacement cassette on ebay, I'm trying to figure out what my options are. This bike is my winter/foul weather commuter, so there's no sentiment involved, and I doubt it would be of particular interest to the vintage enthusiasts. Is there any way to go other than rebuilding the wheel with a new hub/new cassette and adding new shifters? (The shifters switch from index to friction, so I guess I could go with the existing ones if cash was really tight - my wife has this warped sense of priorities that places feeding the children above new bike gear.) I'm trying to get a sense of whether the cost to upgrade would be warranted, or if I should just go ahead and replace the whole bike. Thanks for any advice.