Manual Steering Box

"The 16:1 setup, to our eyes, the cremé de la cremé, was a production option on A-bodies from 1965 thru 1969. By the late ’70s, finding either a complete, usable 16:1 box, or a NOS worm shaft assembly, had become one of the holy grails of Mopar partsdom."

Taken from.........

http://www.firmfeel.com/articles/MAarticle2014dec.pdf