We may have stumbled across Chevrolet's upcoming LS7-powered Camaro.

It may not look like much, but this yellow prototype could be the precursor to the most powerful naturally-aspirated Chevrolet Camaro ever put into regular production.

Late last year we learned via a leaked VIN card that Chevrolet was planning to wedge its 7.0L LS7 V8 between the fender wells of the 2014 Camaro. However, no other details were given, leading us to wonder if the project would actually make the transition to production.

Although we're still searching for definitive proof that the Corvette Z06's drivetrain will be offered in the 2014 Camaro, we now at least have some circumstantial evidence to offer.

During a recent campout in Michigan, our spy photographers stumbled across a mysterious Camaro prototype. The car was mostly bone stock, but there were a few tweaks that caught our eye.

Up front you'll notice that the Camaro prototype has a unique two-bar grille rather than the single-bar unit used on the current Camaro. There also appears to be some kind of instrumentation sticking out from the grille, potentially indicated a new type of engine is lurking under hood.

The rest of the car looks to be pretty much identical to the Camaro SS you can buy now, but there is a major difference at the back. Whereas the current Camaro SS comes with a pair of dual exhaust outlets, this prototype is fitted with the same quad-exhaust system that you would typically find on the 1LE or ZL1 packages.

Our man on the ground said the car had the unmistakable growl of a V8, ruling out this prototype being an early test bed for a twin-turbocharged V6.

So, is this the rumored LS7-powered Camaro? While we can't say for sure, we'll keep our ear to the ground and let you know if we uncover anything else.