Hey Mark ,I got it to go 12.004,motor is over powering the tires and the 60 foot times slowed to 1.65 from 1.49.but the new power pulled it thru on the top end..but I still got a few tricks in my bag...planning to go next week to PBIR and get my 11.9..3760 lbs doesn't help.. then she may go up for sale.. Thanks Larry