Found this when looking for fluid. Monday I start calling around to see if it can be found!!
"formulated for synchromesh transmissions used by General Motors requiring General Motors Part No. 12345349 (Specification No. 9985648) Synchromesh Transmission Fluid or Chrysler transmissions requiring Part No. 4874464 (Specification MS-9224). "
http://www.pennzoil.com/penn/products/car_truck/pdfs/gearoil/SynchromeshFluid.pdf
"formulated for synchromesh transmissions used by General Motors requiring General Motors Part No. 12345349 (Specification No. 9985648) Synchromesh Transmission Fluid or Chrysler transmissions requiring Part No. 4874464 (Specification MS-9224). "
http://www.pennzoil.com/penn/products/car_truck/pdfs/gearoil/SynchromeshFluid.pdf