Outriggers!?!?

I've removed the shell from my 1960 safari. The floor is removed and the frame is bare. I need to replace a few outriggers and have found some replacements at Airstream Parts for new and vintage Airstream trailers.



I got a little worried after talking to customer service....I wasn't convinced he was the most informed.



At any rate, does anyone have some insight on where to purchase these and what length do they come?



Thanks for your input.

John