Hard to say! But I think it would have been the 72 Olds Delta 88 with the 455 my Ma had when I was a tike. Never frove it, obviously. But the stuff that came after was a 1980 Ford LTD, a 1983 Chevy Caprice wagon(that was actually a very, VERY nice car for the era) and then an assortment of 80's/90s front wheel drive stuff.
I grew up farming, and got to drive a tractor at age 8. So that set things up differently for me. The 1963 Ford 9 foot box one ton farm truck has a special place because it was the first vehicle I got to drive at age 10(not on the road) followed by the replacement 1979 Ford F250, which I did get to drive on the road.
I was a kid in the 80's. Stuff that was on TV:
So yeah, sports cars and bad *** trucks caught my eye.
Stuff that was on the car lots:
Look, I know every era had it's family trucksters, but in the 80s with the front wheel drive revolution and the TRUE malaise/smog era(that is right, 1970's has NOTHING on 1980-1984 when it comes to HP losses) there sure was a lot of forgettable junk on the road. Probably why I started liking the old stuff already in Junior High, the 1979 F250 I had access to would stomp my buddies shiny new front wheel drive blah mobiles they got to drive(parents cars) handily. It was absolutely clear that stuff from 1979 and before had more guts and less BS built in then anything from 1980 and up. It wasn;t until i was graduating HS that things had turned around and some actual power was on the street.
In modern times I moved that line up to the late 90's. Chrysler Magnum V8 and the last 5.0 Fords are cheap, simple, and a blast to drive. It might be "newer" but it is still decades old tech and I still prefer it.