Keep in mind that very few parts of your rig are specific proprietary "Airstream" items. With the exception of the frames and bodies (the skeleton) most of the innards are off the shelf items either from the automotive, marine, or RV market or even the general houselhold hardware market. It takes awhile to become familiar with alll the vendors, but forum members have winnowed out just about every source and are more than willing to share–just ask. That said there are a few hen's teeth that are precious finds when they occur. WELCOME!
"Not all who are laundering are washed" say Bill & Heidi
'78 Excella 500,"The Silver Pullit". vacuum over hydraulic disc brakes, center bath, rear twin. '67 Travelall 1200 B 4X4 WBCCI 3737