Justhorsen - Thank you! This sounds like it's right up my alley. Going to check it out now.
Jon - Thank you for the website! I'm definitely going to let our son's help with this part because one has a 1996 pickup that they've done this in, and the other has helped a couple of friends with older vehicles as well. Glad to know it is a possibility... Gotta have my music to cancel out all the road noise. LOL