Pro Street is just a look. Doesnt even have to be fast.
Rick Dobbertin helped to sky rocket the whole pro street craze in the 80s. First with his nova, then followed by his iconic Pontiac J2000.
http://www.dobbertinhydrocar.com/J2000.htm
Rick Dobbertin also built a Pro Street,
FWD Grand AM.
http://www.dobbertinhydrocar.com/Grand%20Am.htm
Goofy? Yes. Consistent bracket racing car with unrivaled reliability? Yes. It was done just for looks, and there were a few people back during the real Pro Street days that did this just for the look, while having a consistent bracket car.
Pro Street itself is nothing more than a look.