Turismo Carretera started in Argentina in 1937 and has continuiously raced since. Other series took breaks for wars and reorganization but not the Carretera therefore they hold the claim. Now the cars...

They are “stock cars” in the same sense of NASCAR being stock. They hold on to a loose sense of Falcons and Novas of the day and the straight sixes used therein but these are 4valve and 9000 rpm, Somewhere around 450hp. Glorious sounds if you ask me. They may look a bit chunky compared to our euroamerican standard but the tech and hard racing is all there.

I have no idea what Theyre saying here, but the video shows awesome engines inside so we can learn a bit more: