Looking for 340 and/or 4 speed for 70 Dart LM23H0R321233

As a point of interest, I bought a slightly used 70 Swinger 340/4speed car, back in 1970, in Winnipeg Manitoba. It was Panther Pink/ or whatever Dodge called it..
The Vin number was
LM23H0R321200

I sold it in 1975 and never ever saw it again.
I thought that was pretty cool.