Question about Cheetah shifter

Bought the 70 Duster and it has a Cheetah SCS reverse pattern shifter in it with a manual valve body, can anyone explain to me how this shifter works and even have a video of how one works, haven't been able to get car home or even get to drive it so would like to know more about it before getting it home, it also has a built 727 trans and a 3000 stall converter, owner said the 340 is built to move, he had an older Road Runner with a 383 pushing 450hp and said the little Duster with the 340 will near outdo the 383, gotta be built with some poser I would think. Thanks for any help on the cheetah shifter.
Author: Hibred