On the fog light, check and see if the original ones have a number molded into the plastic/glass lens. If they do then Google that number and you may find what car/truck also used that fog light. Then its off to the auto parts house or on line parts.
Are you looking for a used rear bumper? There are several used RV salvage parts places around.
Good Luck, Be Safe and Above All, Don't Forget To Have Fun
2006 Fleetwood Discovery 35H, being pushed by a 2009 Honda CRV