Whipped up some of these for light duty full size trucks. None of them can be had with a crew cab + 8 foot bed configuration. Some are available with the 6'4" option, but most crew cab light duty trucks come with the 5'5" bed. Presumably, these don’t actually exist cause they would probably eat into heavy duty truck sales (and might be due to engineering or weight limits? not sure about that).
These were all made by screenshotting each truck’s online configurator and then attaching the 8' bed variants onto the crew cab ones. The Ram 1500 doesn’t offer an 8' bed so I just lined it up with a Ram 2500's bed by extending the 6'4" crew cab bed.
LONG LIVE PHOTOSHOP