it depends on your launch , what 60 foot you can achieve my best was 13.46 at 106mph with a crap 2.0 60 foot time, couldn't get it to launch any better on the dunlops . A BF 6 sp auto should pull constant 1.8, 1.9 60ft if launched well so a low 13 should be on the cards.. just practice I guess if you have the time..