It may be a bit harder to find but the Caprice PPV may be even better. They are a little longer, have a higher ride height with stiffer/beefed front and rear suspension, bigger cooling and brakes, and are available with the 6.0 and 6 speed as well. Plus you can get one up to 2017 model year, not limited to 2009 on the G8. I think it has a 1173 pound payload with the V8 as well. Then of course there is the unlimited speed governor so you can get it up to about 152 mph according to the Michigan police vehicle testing!
https://jalopnik.com/oh-boy-you-can-...car-1796585246