My plan is to get my door panels from Rod Doors, they
have panels for '55-'59 trucks called "The Kobi" .. you can buy
universal panels in other design and custom cut them, but nothing has
caught my eye yet.
The headliner is also from Rod Doors, and matches the
headliner. They also make kick panel covers and back cab panels. These
just need to be covered in your favorite materials.