We should be at MATS next year. These heads use the same 80cc "closed chamber" design as our standard Stealths, with straight spark plugs. The port window is not max wedge, but it is essentially an enlarged or "port matched" version of a standard port size. Factory spec on port windows is 2.27 x 1.23, and factory heads are usually considerably smaller than this. Our port window size spec is 2.33 x 1.28, although port window size ends up being determined by the size/position of the sand core molds, so they are not accurate to the thousandth by any means.

As far as CFM and port CC's, etc, we are not officially advertising these, because these heads are being sold only as a rough starting point. What your shop does to them, including what size/type of valves used, valve job, level of porting, etc will determine these numbers. We'll see what some cylinder head shops can do and have them advertise their specs and numbers. I'm sure we'll be setting up a partnership with Jeff at Modern for something like this. Once this is setup, we'll publish the numbers and specs he supplies.

Also, these are currently available for purchase. The part number for one bare head is 200-1127, so be sure to order a quantity of two for a set. They are not listed on our web store yet, but they can be ordered over the phone through a salesperson. Cost is $499.95 per head.