Stirring the pot

I don't have a problem with engine swaps. A friend and I were Mopar people, but he had a 68 Merc Cougar "roller". So we did a 440/727 install as we had the parts.
I had a 49 Merc, with a 303 Olds engine. A 54 Stude with a Packard engine. 34 Ford with a Caddy engine. Several others that had engine swaps within the "family", but not available from the factory. Back in the day that was called "Hot Rodding".
totally unrelated, but interesting observation...you mentioned 6 different car brands...only two of them still remain today