Awesome A-body air dam for under $30!

There are plenty of bumper spoilers out there these days that would fit nicely (widthwise). A-bodies have a fairly common width comparing to newer/other cars.
Personally I think the spoiler shown in the first post is still about 4" too narrow and is not 'covering' the front wheels. 1-2" lower would look better too imo.

The NOS aftermarket spoiler on my Dart came from a '80s Mercedes and was a nice match for the width of my car;