Will is right. There are a few others making these currently. From what I've seen though, we''re the only ones producing them with a billet rail (that has been machined to use factory style gaskets) and the only ones offering multiple design options (in addition to the option of a polished finish).
Also, just a heads up that we have launched our website, where we are now taking orders for the valve covers. Per the many requests, we expect to have the L67 covers ready very early in 2006.
Anyhow, feel free to check out our site:
Finally, we're soliciting new product ideas on the site and as part of the deal...any product that we begin production based on your suggestion will lead to you getting that product for free.