actually you have a 30RH 3 speed tranny the 904 and 909 were used in the CJ sereis and wrangler 4 bangers till 91.

since it is blown and you have nothing to lose. go get a manual and clear off some space on a big table in the garage. if you are good with machines you should be able to pull it and rebuild it yourself with had tools and maybe a trip to a tranny shop to use one of there presses for under 300$.