A833 trans swap or replacement for sale

I will agree with the other members but especially it’s it’s A 340 “GTS” with the numbers engine.
You have one of those situations where your car is worth more stock and OEM / NOS parts vs if it was a 6 cylinder dart with a 5.7-6.4 and 5/6 speed.
I’ve been in that boat with olds 442s before and it was always the non valuable cars that were perfect or great original condition and the big block 4 speeds or w30/w31s that were missing parts of drivetrain or rotted to death. Child vs granny driving and storage, lol, one parks on side of the road one puts it in the garage and drives 3-7 mile day.

I would try to save your trans it will definitely be worth more with that trans to a future buyer even if you swap to a modern trans and keep that stored and covered. But your car your choice and money is nice but darn she’s been bangin gears in that dart for 54 years I would let her be or retire her to your retirement facility, basement or covered in garage.

Wish you the best either way
J R