I guess Quentin Tarantino liked this "lost" 1975 movie so much that he bought it and re-released it. It's currently playing on Showtime and it's worth a watch for the roller-rink gunfight, and the High School bathroom prostitution.
I don't know -it has the cool cheese factor and a soundtrack that could've been in a dozen or so movies. I could give you a plot rundown but just check it out sometime when nothing else is on... What else do you want to know?