You see a lot of people having problems at 100k but I think well cared for the 4 speeds are usually good for 200k. But sometimes a problem is just the luck of the draw.

I would say get your transmission rebuilt in your area by the best, most honest shop you can find. I say keep the one you've got because you know there isn't much wrong with it. The reality is that it probably doesn't need that much - just some work on the front pump. But nobody wants to do that job. Everbody wants to rebuild the whole thing. And there is a good argument for rebuilding the whole thing - it's about seven hours just to get it out and in the car.

If you were in Phoenix, or even in the southwest, it's a no-brainer. You take it to German Transmission Co. Like Dave I had mine rebuilt there, for about the same price, and it's been bulletproof. But that's an anomaly - it's a one man shop, the guy can rebuild transmissions in his sleep, and he's just starting up the shop. I would think where you are you should be able to get it for $2k or a little less.