They are made to order, and average price is between $40 to $100 plus shipping. Just depends on material and how crazy you want to go with it.
Trust me, for what you are getting $100 bucks is nothing.
How much motor work do you plan on doing?
Your going to get a million opinions on this question. For good "all around" riding, I've always liked Pro Circuits.
Unless I'm reading that wrong it still says, "out for delivery". Maybe it's still enroute?
But if your in Lou, why the hell did it go to or through Co.....
X2, the link posted is for a cub.
Here are some options that will work for you, except the "super cub" head.
http://motors.shop.ebay.com/i.html?_from=R40&_trksid=p3841.m570.l1313&_nkw=Chariot+cool+head&_sacat= <--------------------------
Send a site sponsor on here your cylinders, or if you live close to one take them in.
Wildcard Racing, FAST, HJR, Redline, M&M, Passion.....Can't go wrong with any of these guys.
I run a Wildcard Racing ported bike and I love it