Installing a pistol grip on a 1980 A833 OD

Picked up a original B-body pistol grip shifter (Old man said he took it out of "one of them big old chargers" and it hung on his garage wall for 25 years) for my truck yesterday, Is there any diagrams on how to remove the factory shifter and installing the pistol grip? never done this before.

Also will it even work on a Factory OD shifter? :D or will i have to modify it?


-John