HI,
Sorry for not enough info, it's a 93 model with a six speed cogset. It has 135mm OLD. The original rear shifter is an Altus c-20 and the housing is broken where the cable comes in. It still works, but doesn't shift smoothly and is just waiting to break altogether. So there aren't very many good 6 speed shifters out there and I would like a few more gears. The current chainring is 28-38-48, and the rear cogset is 14-28, which is fairly high gearing for a mountain bike. I'm using it as a commuter and would like to get a 12-32 8 speed on the rear to give a little more low range and more gears to work with in between. I'm also looking at a Deore m591 rear derailleur. I picked the bike up for $75 and was hoping to stay under $200 for the upgrades. I was contemplating whether I should go ahead to 9 or 10 speed, but it seems to get more expensive when you go above 8 and I've heard the chains don't last as long.
Thanks again for the input.
Jon