The GMC Sprint was made from 1971 until 1977. It would later be renamed the Caballero and was finally discontinued in 1987. There were very few differences between these
Sprints and the El Camino. With a V6 engine standard and a V8 standard/optional depending on year, it was just as sporty as its counterpart from Chevrolet.
There was even a GMC variant for the popular El Camino SS. The Sprint SP (also called the Sprint SP-454 was a 350 horsepower monster made to terrorize the streets while carrying large cargo in the back. Cowl induction was only available on the SP model, although very few were ordered. Any surviving models with these features should be considered highly collectible. The SP package in general was a very rare option, as it was not listed in sales literature and was only available by special order of the YE7 package at the dealership. Even many dealers did not know that the SP existed in the early years.
These cars are rare and sought after by many collectors. They probably will not pop up in your local used car market, but you can find one if you look hard enough. The easiest place to look is eBay, which will often have a listing or two for these cars, sometimes with rare options. You've just got to keep your eyes (and wallet) open if you want to snag one of these for your collection. If you can find an SP, you'll be the owner of the greatest muscle car ever made by GMC.