Thread: Rarest Option
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Old 08-12-2017, 12:01 PM   #40
61Chevy454
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Join Date: Mar 2017
Location: Wellsville, Missouri
Posts: 103
Re: Rarest Option
Quote:
Originally Posted by Classic v6 GMC's View Post
3 Speed Overdrive
65-66 Th400 transmission
60-61 Custom trim
66 gmc sports trim (bucket seats)

lots of others
There was a 3 speed overdrive option?! What transmission was that?
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