We're going to be installing a 3rd "jump" seat into our 1986 245. We got this 3rd seat from a 1989 245 (same interior/exterior color). Our wagon never had a 3rd seat to begin with, so we're doing a retrofit. Since the interior is the same, we were considering not removing the seat from the panel, but just swapping the entire panel. Will that work? Would like any information/advice/potential problems regarding the installation process.