What 1966 Chevy c's transmission?

There were eight manual transmissions used in the 1966 Chevy trucks: -Three Speed (Saginaw)

-Three Speed Heavy-Duty (Warner T89)

-Four-Speed (Chevrolet)

-Five-Speed (New Process)

-Five-Speed (Spicer 5000 Series)

-Five-Speed (Clark 264VO, 267V, 2622V, 2653V, 269V)

-Eight-Speed Road Ranger (Fuller)

-Four-Speed Heavy Duty (New Process Model 435) Automatic Transmissions used are: -Powerglide

-Allison Automatic

-Turbo Hydra-Matic