[Richard and Rhonda]

I can't provide you any specific info about that model since I don't have one of that vintage.

However, in addition to the general checklists that KC gave you, here is what I would do. I would get the engine make and model plus transmission make and model. I would google those makes and models to see what specific issues exist with them.

Since you have a C already, you will know about tire replacement. You won't have experience with air brakes or air suspension, so you might want to educate yourself on the basics there. Again, google is your friend.