As a heads up: I believe GM changed the design of the panhard bars (3) times during the 60-66 C10 run:

* 1960-1962 utilized a 33" bar length
* 1963-1964 utilized a 27" bar length
* 1965-1966 utilized a 24" bar length

Bar length and mounting to the axle changed.

Measure thrice... buy once.

And FWIW.... Here is a tech article I authored back in 2011 related to track bars: http://talk.classicparts.com/threads/track-bars-the-short-and-the-long-of-it.14368/
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John thumbs_up

Last edited by Hot Rod John; 11/20/2015 3:37 PM.