Corvette ZR1 test mule shows off its curves in rare public appearance

When it comes to Corvettes, General Motors is willing to sell you one in just about any flavor you want.

There's the relatively-affordable Stingray model, track-focused Grand Sport variant, and the powerful Z06 version, but Chevy seemingly decided that wasn't enough because new spy photos show that it's testing an even more powerful ZR1 model.

Rumored to debut at the 2018 North American International Auto Show, the Corvette ZR1 test mule features a distinct front splitter and gigantic rear wing, which will be the largest wing to ever come equipped on a factory Corvette. What's more, there's a noticeable bulge in the hood that could be hiding a supercharger.

There's been much speculation around the internet as to what engine GM will offer with the new Corvette ZR1. While some car enthusiasts think Chevy will simply offer an even more potent version of the supercharged LT4 V8 found in the Z06, others have speculated this 'Vette could be getting a LT5 twin-turbo small-block V8. The latter of which would certainly help this model distinguish itself from the current Z06.

AutoBlog has also reported the new Corvette ZR1 will be available with an automatic transmission. This is noteworthy because the top-level Camaro--the ZL1 1LE--is only offered with a manual gearbox. This decision could also separate the ZL1 from its high-performance GM cousin.

Of course, this is all speculation for the time being as Chevrolet has yet to confirm any details regarding the upcoming Corvette ZR1 and why would they?

That would ruin the excitement for everyone that's planning on attending the Detroit Auto Show.