Overdrive transmission selection Home › Forums › Automotive / Tech Help › Overdrive transmission selection This topic contains 0 replies, has 1 voice, and was last updated by Mike Lane 12 months ago. Viewing 1 post (of 1 total) Author Posts February 25, 2017 at 9:46 pm #1848 Mike LaneParticipant I’m looking to up date my 1967 GTO 4 speed to an overdrive type. What mfg. is best compatible to the stock crossmember mount and shifter location? Richmond, Temec or other. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.