Is there an aftermarket solution for the event hose and filler hose? Cummins wants $180

What happened to the one that came with the truck? Can you use parts of the old one and just piece it together with rubber hose lengths and some clamps? At that price I'd have a muffler shop fab one up perhaps. I know you don't much need the filler neck vent because mine fills just fine without it. My return fuel goes into the old filler neck vent. I can see the return flow inside the filler neck when removing the fuel cap. Then the filler neck vent termination point on the top of the tank became the tank vent hosed up to just inside the fuel door with a screened boat style vent there.

I assume the filler neck is okay but the hoses are cracked and have been leaking. I'm trying to get this all done in one day putting as many parts together as possible. I'll get started early so that the parts stores will be open. H