With the C7 Corvette Z06, General Motors did the unthinkable, making the supercharged stingray available in both automatic and drop top configurations. Now as we gear up for the arrival of the ZR1, it appears GM may now commit blasphemy...

That's because spy shooters snapped a convertible C7 ZR1 prototype testing at GM's Proving Grounds, this guy shares all the basics already displayed by recent ZR1 mules--aggressive aero work, seemingly taller power dome and even the same double five spoke wheels--except this time it ditches the tin top in favor of something a little more comfortable.

If and when the ZR1 drop top comes to market, it will be GM's most premium open-air-oh-no-my-hair offering, topping both the Z06 and Camaro ZL1 ragtops in price, prestige and performance.

Chevrolet is notably working on several different aero packages for the ZR1, we've seen both a small pedestal style spoiler, and a huge downforce generating wing for doing race car things. The convertible here rocks the smaller of the two and it's likely the track setup won't be available to those who go topless.

We're still dying to figure out what's under the hood of the ZR1, some think it will be a simple evolution of GM's insane supercharged small-block LT4, while other camps believe the ZR1 will abandon pushrods and debut a long rumored quad-cam V8, potentially with a flat-plane crank and upwards of 700 horsepower--but who knows.

We also don't know when the ZR1 will actually make an official appearance. GM has been quite clever and non-traditional in launching its performance products as of late, it's possible Chevy will forego the bland autoshow debut and surprise us with a shock showing at something like the world renowned 24 Hours of Le Mans in June, emulating the launch of the Camaro ZL1 1LE at the 2017 Daytona 500.