Nathan, the guy I got my trim from down in Longview has everything you need. And I do mean everything. He has at least three wagons down there right now that are complete. I'm sure I saw at least two of those spare tire covers you speak of plus any other do dad you need. When I get to work this am I will post up his info. He does ship most of the parts but if there is anything he won't ship, we will get it picked up and at least get it to Seattle so it can start making its way over to you.
His name is Steve Averre (Avery) and be ready he can talk more than I can.