a few years back Coach was going to change his 5.0 EFI motor. I suggested he take Doc and his G-Tec to check his 0 to 60 time before he installed the 408.
a few days later he was complaining about his 4.9 times. I asked if he had the top on his Cobra and he answered, Yes. Did you have all that junk in the trunk? Yes. 60 lbs of stuff. Did Doc ride with you? Yes. How cold was it? 45 degrees. It was January.
Well not bad time on street tires in an industrial park at night, cold night.
He never did check out the 408 before he sold the car.

Dwight