Im doing a carbureted swap on my 4.6L cobra engine and need to switch to the newer C heads in order to get a carbureted intake manifold to bolt on, I see a set off a 99 lincoln continental 4.6 on ebay and was wondering if they would work? I know the C heads were 99 and newer and in the listing it says they fit cobra also I just want to run it by people who do this stuff for a living. Just need to know if the 99 continental heads are the same as the 99 cobra heads. Any help will be great, Thanks!