I had a guy like this that ran his mouth all the time about his 04 supercharged Cobra. He had lots of modifications (different pulley on the blower, bigger exhaust, reprogrammed ECM, bigger throttle body, drag radials, etc.) and dyno time on it, and I knew my Cuda was at a power disadvantage. But when the time came, I showed him my taillights big time. He didn't know how to drive the car, and he sold it shortly thereafter. The funny thing is, the shop that did all the work to the car told him that if you can't beat that Cuda, you better sell your car. And he did. LOL.
He couldn't even beat a 340 6 barrel Cuda with factory heads, intake, carbs, block, crank...

These new cars just keep getting faster and faster though. Its amazing what you can buy off the dealer lots these days.