Big block/3 on the tree?

Many were built that way and of those many were converted to four speed.
Yep, My 70 340 Duster came with a 3 speed,floor shift. Insurance was less with a 3 speed.
Just went to the local wrecking yard and got a 4 speed out of a Dart.
Anybody remember those days ?? Cost was $100 and came with a Hurst Competition Plus shifter !!!!