Since I was doing some checking on 3-speed manuals in Cutlasses, I thought I post some more. First there is this:
https://classicoldsmobile.com/forums...ual-floor.html

Now add this regarding 3 on-the-trees:
This is for the Cutlass models only:
3 OTT were std through '73. (Last year for Muncie 4-spd with Hurst shifter)
'74 No std trans at all!!
'75 and '76 Bring back the 3-spd manual as std, but as floor shift. No other manuals
'77, bring back 3 OTT as standard, add 5-speed floor shift
'78 '79 go back to 3-speed floor shift as std, keep 5-speed, add 4-spd floor.
'80 a couple of the lesser models have 3-speed floor shift standard, the other are autos, no other manuals.
'81 on, all automatics.

 

I have seen exactly one 1973 3-on-the-tree Cutlass, and exactly one 1971 Delta 88 sedan with it. The Cutlass was an F37 coupe and also had rubber floor mat, which I had also never seen in a 73. It was in a junkyard near Reidsville NC and carried a dealer badge from somewhere in Massachusetts, which explained a lot because Olds dealers around here simply did not order stripper cars. They left that market to Chevy, Ford and Plymouth unless they knew you wanted to take a 442 racing.

That JY also had what I thought was a 76 Cutlass sedan with Chevy six and 3-speed column shift, but it may have been a 77. It also had a dealer badge from far away.