Just for comparison, my mates Nova back in the day was doing 122mph to hit a 12.1.

Usually it is as a yardstick (for FWD)

Low 13 - 110
Low 12 - 120
Low 11 - 130
Low 10 - 140
9.5 - 150
9 - 160

Or if you are the daddy, 7.8 - 200mph