It appears to be. I just rebuilt my whole front end on my '65 Barracuda & used the 11/16" tie rod setup. The car is still sitting on jack stands so I have not driven it yet but everything went together fine. There is more info in this thread:
http://www.forabodiesonly.com/mopar/showthread.php?t=129017
I do not claim to be an expert so take it for what it is worth. Hope it helps.