its pretty dope! i like the idea of using thew burnside since its the closest you can get to a 59' caddy.
the barstow haves a wagon adon so mabe you can make that but the burnside got one to https://www.beamng.com/resources/burnside-wagon-body.5182/ and https://www.beamng.com/resources/barstow-wagon.3626/reviews