I was thinking about getting one but, every site says "not recommended for everyday street use"

Also this particular shop sells, one for $499 but that doesn't include a flywheel. Is this right?

 

Call spec and talk to dave. He was very helpful. I just got the stage 4 and it's very streetable. It will chatter some but you just have to give it a little more gas. I'm using my stock master. Mine came with a new flywheel. pistol@nb.net if you have any questions. I'd be glad to help ya out.

 

mine is working fine, about 50 miles a day.

look around, i think there is a group purchase going on them now.