Wow these gears are looong... ~200mph in 4th? What the hell would theoretical top of 6th be?
4th tops hits 149MPH in the auto with 2.73 and a 28 inch tire at 7000RPM. Theoretical top of 6th at 7000rpm 2.73 and 28 inch tire is 310MPH. with 3.73s it's 227MPH