That decal is a "Buick Turbo 6" like found on a 1986 Buick Grand National. It also was 3.8 liters - like this Turbo S. I bought a 1986 GN new and had it for 21 years.

That is an International Harvester decal. This car travels in Wisconsin often and the sticker connects with Farmers. As an aside, I've got a 1947 IH B.

A 991 911 Turbo S similar to this was tested against a GTR Nismo and C7 Z06 in the April 2015 Car and Driver. The 911 went 10.6 at 130 in the quarter, 0 to 60 in 2.5 and 0 to 30 in 1.0. Check out the stats page from C&D at: http://www.caranddriver.com/comparisons/2015-chevrolet-corvette-z06-vs-2015-nissan-gt-r-nismo-2014-porsche-911-turbo-s-final-scoring-performance-data-and-complete-specs-page-5

Okay, the video below is not of anything turbocharged. But don't BB Chevys sound wonderful, too?