We made our own tooling to produce these trim rings, we only sell direct and do not offer our products through any other dealers.
These trim rings fit OEM hoods so of course can be used to build an accurate replica from a flat hood as well.
They are cast in a zinc alloy, a very similar alloy to what OEM trim rings were cast from.
The above photos are showing our reproduction next to an original ring (ours is on the left) for comparison purposes. The size and shape is right on so they will drop right in without any mods.
The steel studs are inserted after casting to make them more durable than the OEM zinc studs, they are very secure and will not pull out when tightened.
These will fit flush in your OEM hood without major work, ours fit right out of the box and require only the normal minor metal finish detailing and primer/sealer before painting.
(From:
http://cgi.ebay.com/ebaymotors/ws/eBayI ... RK:MEWA:IT )