I have gone as quick as 8.60s at 162mph in the 1/4 in a blown, alky injected BBC powered 91" wheelbase Vega. That being said, my GN (mid 10s) can get away from you VERY quickly on the street. Experience is needed to drive a car like this on the street. It will light the tires from a 65mph roll at PART THROTTLE. My cousin took it for a ride with me in it a few years ago with the boost set low (around 18psi). It scared the living crap out of him.
It takes a mature, experienced driver with a ton of self control and common sense to drive a 550rwhp car on the street. Somone lacking these qualities will surely either kill himself, someone else or both. Listen to your mom. I wish I would have quite a few times when I was younger (dad, too).