Designing in the capability of producing right hand drive capability [engineering design, parts, assembly line] was not a cheap decision. The additional costs must be amortized over the number of right hand drive units sold. Consider also, that the cost to even get the C8 across the border of...
Oliver Gavin took a C8 Z-51 around the 'ring in 7:29.9. The C7 Z51 made it in 7:33.
Others Times of Interest:
C7 Grand Sport 7:27
C7 Z06 7:10
C7 ZR1 6:57
2017 Camaro 650-hp ZL1 7:29.60
2018 Track-Focused Camaro ZL1-LE 7:16.04
McLaren MP4-12C 7:28+
Lamborghini Huracán LP 610-4 7:28+