Stablizing Jacks for 77 sovereign
The stabilizer jacks were typically BAL and are available from most RV parts sources as Juel indicated. You may find that you need the special BAL stabilizer jack for Airstream that has an extended drive that places the point where the handle attaches closer to the edge of the banana wrap. The first set of stabilizers on my Overlander didn't have these extensions (had Camping World install them before realizing that there was a special extended model available for Airstreams) -- I later had the BAL stabilizers with the extension designed for Airstream installed on my Overlander as well as my Minuet.
Good luck with your search!
Kevin D. Allen
WBCCI (Lifetime Member)/VAC/Free Wheelers #6359
1964 Overlander International/1999 GMC K2500 Suburban (7400 VORTEC/4.11 Differentials)
1978 Argosy Minuet 6.0 Metre/1975 Cadillac Eldorado Convertible (8.2 Liter V8/2.70 Final Drive)