Also at the back is the smaller of two rear wings we've seen on ZR1 prototypes so far. It's also the only wing we've ever seen equipped with the convertible. On coupes, both the small wing and much taller and wider one have been fitted. While it could be that we just haven't been lucky enough to see a soft-top with the tall wing, it's also possible Chevrolet won't offer the tall one on the convertible at all. It could be part of a coupe-exclusive track package. This wouldn't be unreasonable since people hunting the fastest lap time will probably opt for the coupe anyway. There could also be aerodynamic reasons not to offer the tall wing on the roadster.
Otherwise, we expect the convertible to use the same engine as the coupe, which will likely be a more powerful version of the supercharged LT4 V8 found in the Z06. It will probably make at least 700 horsepower, which would give it bragging rights against the Dodge Hellcat, and a sizable bump compared with the Z06. Naturally, that extra power will be supported by bigger brakes and better suspension. Also be sure to check out our post with everything we know about the ZR1 for more photos and info.