...are being produced in U.S.A. by Preform Resources.
The product line is featured in this article from BritishV8's coverage of the 2010 meet:
<a href="http://www.britishv8.org/Articles/2010-TechSessions.htm">
Continuing Education: BritishV8 2010 Tech Sessions</a>
teaser photos
MG "RV8" hood provides clearance for four barrel carburetors and taller intake manifolds:
(http://www.britishv8.org/Articles/Images-V18-1/2010TechSessions-PR-C.jpg)
Sebring rear valance for when you go bumperless:
(http://www.britishv8.org/Articles/Images-V18-1/2010TechSessions-PR-F.jpg)