ASP crank pulley, street? or race?

[1BAD89]

I was at a dyno session and one of my good friends had his 90 LX there. Pretty much stock, except exhaust. He got a chance to switch pullies, 11hp and that was on the street pullies, needless to say I was shocked, I wouldn't get the race pulley if you want to drive it on the street at all with it on. There is a reason while it's called a "race only" pulley.