Welcome to the Team Dana!
You are correct. Ninety five percent of the active members on this board have a rear wheel drive V-8 powered American made car that they restore or modify as a hobby.
We get a few wrong wheel drive Impala owners who drop by in hopes of getting free advise on how to fix a problem with their computer controlled everythin;, which few of us have any idea as to how to help them.
As you are a member of Team Chevelle I am sure you have a grasp on the basic concepts. The Impala (Caprice, Bel Air, Kingswood) is just a bigger version; though different models do have their own way of mounting things to keep the one part fits all from truly applying.
As a former Airdale in the brown shoe Navy I salute your service.