Here is the trailer!...
http://i2.listal.com/image/1103930/600full-smokey-and-the-bandit-ii-screenshot.jpg
Here is the truck decals from Jerry @ Modeltruckin.com
http://www.modeltruckin.com/store/images/bandit2_gmc_general.JPG
Im looking for the trailer now...
Edit: the trailer stripe section you may have to get another truck set and modify for the trailer...but the stagecoach section can be had from jerry at modeltruckin.com to....