Please help... ? About rear custom fiberglass bumper for TC

Ok guys, bear with me. I have a 1999 Ford triton V 10 dually that has a custom rear bumper that my father in law had made to accommodate his TC back in 99. Obviously I have inherited the truck and the bumper needs replacing. It is cracked and falling off the truck. It really isn't a bumper but a bumper plate made of fiberglass. It is flat against the truck and does not stick out at all. I assume it was made to give more room for a TC to fit flat against the rear of the truck, as the father in law had a huge...long camper. I am looking for a pic to show you, but was hoping that someone would know what I was talking about from this vague description. Regardless the fiberglass is cracked pretty severely and I need to replace. Can't find a darn thing online. Anyone know anything about this? ( will post w pic ASAP)