is it really that difficult to find? crap - I might need a new rear 100gs mech for my giant. dont care if its low end, its been fine for me and Im not gentle on the poor bike.
why not upgrade. My first mountain bike was a department store McKinley with 100GS. It was flat black with neon orange bars and fork. The feature was the chromoly fork... haha, it was a tank.
Dont want to upgrade as i want this pure and original. Ive got many other rides. Kona kula full xtr, kona koa full xt etc. But this ones different. Its a 1991 marin stinson and the the rarety of the bike itself is special enough. It just a mission for me really. And when i have completed it, i will find another project and set myself new tasks for that.
i've dived deep and have located a full 100 gs group if you are interested (except hubs). front/rear mechs, chainset, stis, levers and cantis, all on a bike that has never been used.
let me know if you want it, price will be very fair!