I just posted a new ad on Airstream Classifieds.
I bought these four Gabriel shocks from Inland RV in Southern California and then sold my Airstream before installing them.
They are brand new and are the correct shock for many sixties Airstreams. They are intended to be mounted in the horizontal position.
If your shock mounts horizontally, to my knowledge, this is just about the only correct shock. A normal automotive shock is intended to mount vertically, so the fluid doesn't circulate correctly if mounted horizontally.
The part number is 610816 and was made specifically for Airstream by Gabriel.
Price is $85 plus $12 USPS Priority Mail in Continental US.
You can contact us by filling in the form on the right hand column of the ad listing: