I voted for the Ferrari 512BB. Did you know it holds one of the rare non-V shaped engines that the manufacurer ever produced? Perhaps a wink to Porsche that back then and to date sticks to boxer-designed engine blocks.
Yup, only 2 different models had 12 cylinder boxer, flat or H type engines, the rest are all V type engines from 6 to 12 cylinders.
First was the
BB. Which stands for
Berlinetta Boxer and 3 versions were made:
365 BB
(365 being the one cylinder capacity, the way their cars were named until then, and adds to about 4.4 liter)
512 BB /
512i BB
(5 for 5 liter, and 12 for the number of cylinders, the new way the cars were named from then on, and i for the fuel injection model)
Then they carried the 512 flat 12 engine to a new model, the 512TR. TR from
TestaRossa, the name it became know by, and that comes from the fact that the engine head(s) were painted red. Then they made a new version an dropped the TR, replacing it by an M for Modificata. Lost the charm in my opinion, and deserved not to be called Testarossa anymore.
I'm a fan of boxer engines... the first engine Mr Benz made was a flat 2cyl I believe. Then you have the well known Subarus, these Ferraris, and the Alfa-Romeus 33, Sprint, AlfaSud...
Also well known but less, hum... performant were the Citroen 2CV (and Dyane, Ami, Mehari) and the world famous Beetle.
Maybe there are some more I don't know or remember now.
But Porsche as you said, is the only manufacturer to keep to the original format since the 356 to the latest 911 (my favorite of all cars) the Cayman and the Boxster. They keep it alive with new improvements all the time. Started as air-cooled 2 valve per cyl RR engines on RWD, and we now have 4 valve, water cooling, turbos, direct fuel injection, dual clutch gearbox, on RWD and 4WD.
Subaru also keeps it alive, and on the bikes Honda (Goldwing still is, I think) and BMW also carry on with that format.
And boy do I love to hear a boxer engine roar
Almost makes me want to change my vote from the TVR!