Someone said it above, and I want to say it again........
Street racing is simply just not worth it. You know that rush you get when you do it? Well multiply that a couple of times when you put your car on a closed circuit track with 20 other cars, or when you line up next to another car at a legal drag strip. And if that is too unachievable for you, then look into Autocrossing. I did that for a couple of years and loved it.