I'm with airworld on this one. Plates a probably burnt up. If this is the case then you can get a trans rebuild kit from a local parts store (Autozone) for around 150 to 200. It comes with the plates and all. But if you don't want to do it yourself then I'd suggest possibly finding some one local that does rebuilds in their garage. These guys can be bartered down to nearly nuthin and will usually do a great job because they want to make a good name for themselves and get more bussiness. My 82 camaro has a 305 with the stock TH-200 tranny. When it went out I had a guy locally do it. He completely rebuilt it, acid dipped it to clean it up, installed a shift kit in and gave me a 3 month warranty on it all for only $300. After that all I had to do was buy a new torque converter and put it back in my car. Haven't had a single problem with it yet and its been a year now.