From the dealer data book. Mandatory 9 1/4 Sure Grip. Four speed was a no cost option but required the purchase of the Dana.
Neat post. Have serious doubts the 440 4-speed ever came with a 8-3/4" in '67 but I have a reliable source that said he serviced a '67 4-speed GTX with a 9-1/4" many years ago. Most moparites have no idea of what this is, they think it's the later corporate deal put in 70's cars but in early cars it's actually a Dana 54 which has nothing in common with the 70's deal. C-body 440 4-speeds in 67-68 had this unit although with wider width. It's very strong & quite similar in design to the 60. Likely scenario is very early cars came with the 9-1/4" but factory then switched to the much more common 9-3/4". FYI here's a pic of the super rare Dana 54 in my '67 Sport Fury-
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Nope....not even close to like driving a truck.awesome car......... big car with 4 speed must be kinda like driving a truck? very cool