Just went through this with my 904. Said trans was built by a Sydney Chrysler guru but when i found excessive band material in the filter the line given was "Its the filter doing it's job" Anyway turns out the rear band was shot and the rear clutches were burnt after 6 street meets and a 1k's
If you have the tools build it yourself or buy the bits and have some one local piece it together. You could try Pro trans or BBE automatics. Its not rocket science.
