C7.R and Z/28.R are IMSA race cars. The C7.R edition Z06 vette is sort of a tribute to the race car. Currently no .R exists for anything but the vette. As you can tell by my signature I'm toying with making a Chevy Racing edition 1LE.R no such car exists but being a huge IMSA and WEC racing fan I think it would be a cool little personal touch if Its done right.
That being said. I'm hoping for a 6th gen Camaro race car in the IMSA Continental Tire series branded the 1LE.R similar to the 5th Gen Z/28.R that was run in 2015.
In regards to production cars, unless the big winged ZL1 we have seen running around is branded as a ZL1.R I doubt we will get a production .R model car.
