Can you ID this Mopar gearbox?
Affirmative, and that's definitely the small output shaft. Most likely came out of '66-'67 'cuda, if You were on this side of the pond You'd have a market for the bellhousing &/or whole unit. As above, if it's a good price snag it. I have the same trans, My particular one has the 2.66 1st gear, I pounded on it behind My cammed 'teener in My '69 Dart for a couple of years, then for 3 years behind the 383 I dropped in the '83 Diplomat with nitrous. Killed 3 clutches & blew a u-joint, and I slick-shifted it synchro-less & clutchless shifting. I wouldn't put it behind a 440 or Hemi with large slicks, but it will take some abuse, just make sure to use solid HD U-joints w/o holes drilled in them for greasing.