I'm thinking the top one is correct. An eBay seller sent me a spec page and it says the rear link should be 11.5 inches. If you add the broken thread to the bottom link it would be longer. But both are different, so I'm just guessing at this point.
It seems that the only measurement that would matter is the distance from the "stirrup" holes to the seat between the rod and threads. The length of the threaded portion won't affect how it works.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)