4-Door with 340 from the factory?

I wrenched at CPD dealerships 1970-1978. All new cars had to be "prepped or sale". All the techs got an equal share of them. Check for cotter pins, torque lug nuts, nail on the wheel covers, install the antenna, and check fluids and tire pressures, take short test drive (what fun!). Perhaps align a door or trunk lid etc. As far as I know you could order any combination of drive train and any combination of body accessories in any car if you had money and got a good salesman...Except a 340 in a four door or truck.
In '71 the tow truck delivered a 47,000 mile light green metallic 1967 Chrysler 300 to my hoist. It had a 383 2 barrel engine that was locked up tight due to a spun #6 rod bearing. It was all decked out on the outside like any other 300 so I was amazed upon entry to the drivers seat to find it was a 3 on the tree manual transmission car. The interior was cheap too like a /6 valiant. But it did have A/C. Back in those days you could get whatever you wanted, almost.
The car was within the 5/50,000 warranty. The service manager called in the factory rep who told me to pull the right head and #6 rod/piston, remove left bank spark plugs and the starter. I asked him about checking the #4 cam bearing and he said NO! Chrysler then sent a man to re-cut the #6 journal in the car with #5 still attached to the other half of the journal. He bolted a 120 volt motor drive into place of the starter and clamped a wooden handled connecting rod looking arrangement onto the bad journal. the tool had a cutting blade in it that he adjusted with thin strips of shim stock behind the blade. It had a foot pedal speed control like a sewing machine. In less than an hour he had that journal .020" undersized as pretty as could be. One new rod and .020" under bearing later and she was good to go. Those were different times for sure. I wonder if all the car companies were that stingy on fulfilling near end of life warranties back then?