We've already established that the Chevrolet SS is one of the most underrated cars on sale today, but new rumors may exacerbate that claim. Given that the Australian Holden Commodore, the car on which the Chevy SS is based, is being phased out in 2017, GM is preparing a few special editions to send it off the line properly. Australia will get all of the Holden-branded versions of the car, but it seems like Americans may get a special treat too that will be sure to put a smile on the faces of the few fans of the SS.

According to rumors (and previous speculation on our part) heard from GM's Elizabeth, Australia, assembly line and reported by GM Authority, the Commodores that will head to the US with SS badges will get the 6.2-liter supercharged LSA V8 straight from the ZL1 Camaro. In the Camaro, the LSA made 580 horsepower. If these numbers aren't tampered with, then the SS will end up with a substantial power increase over its 6.2-liter LS3. Under the hood of an SS, that unit produces 415 horsepower, effectively making the sedan one of the more inconspicuous sleepers to ever come from a GM factory. That gets paired to a manual transmission sending power out the rear with magnetic shocks to mediate the experience.

A hardware combination like this means that the Chevy SS is one of the best driver's cars for NASCAR fans saddled with children. Given that the Commodore is going out of production soon, the death of the Chevy SS is all but imminent. However, when quizzed about the future of the car, chief engineer for the Chevrolet Camaro, Al Oppenheiser, mentioned that the SS may survive. If a follow-up model is planned, it wouldn't be based on the current car's Zeta platform. The most obvious replacement would be GM's stellar new Alpha platform, which underpins the Cadillac ATS and CTS as well as the new Camaro. We'd love to see our speculation proven true, but for now we think that a sedan that pushes 600 horsepower is a proper send off.