'68 Dodge Dart: Two openings in trans tunnel 4-speed manual

4spdragtop said
Heres what I found when I looked in the 68 parts book. #2660387?? Might be part # for auto trans shaft.Ref #19-48-44.
FWIW, our 67 cuda with factory tach has wiring that goes thru firewall with a grommet. But ours has the factory rally dash. Your wiring I believe goes thru firewall, under carpet and console and connect to console mounted tach.
That boots for auto trans shaft.

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Thanks a lot. It is as 69_340_GTS said: boot is from the automatic but in this car in the wrong place and was obviously used for something different. Maybe i will figure it out when removing my trans and/or the carpet. It mean time i just leave it be.

Thank you all for your help!!!