hey Jim, i think the most info you are going to find is at the Dodge Garage(Gary D's website) 13's can be had easy with the Daytona and still be a daily driver with no drivetrain issues, the auto is a plus as 5 speeds are a little slower in the 1/4 mile, altough i managed to run 12's in my CSX with a 5 speed and a slipping clutch, i sold the car and now its auto again so it should fly.