Rivarossi interiors

I’m wondering if anyone has seen any interiors for the old Rivarossi 4-axle 1930-era streamline cars that didn’t have built in interiors? My dad still needs some for a couple of his trains, especially some diners, but a source with all of them would be nice. Walthers hasn’t had many and my father isn’t as trusting of Ebay as I am so that isn’t an option.

Thank you, Erik

the IHC ones will work, may need an adjustment here or there.