The TH200 is not a very strong transmission, but they came from the factory behind V8s. I don't think any performance parts are made for TH200s. If you maintain it properly and don't abuse it, the TH200 will last. Start hammering on it and its not going to last very long. You probably don't want to put much power in front of it either. If you need to rebuild, throw the 200 away and build a TH350, it bolts in with no problem.