You know i looked at mine and it did not have anything on that center pad above the timing chain, i also forgot to mention that my block has not been decked either and still has the factory broach marks on the block too. the intake manifold on it (dated as well, matches the other stuff) has the firing order over each of the intake ports. When i first obtained this engine about 15+ years ago i did not know anything about LS-6 cars, it really threw me for a loop when i stared doing research on it, i did not even own a LS-6 car at the time or had ever seen a real one, i still have not seen one other than mine, at least where i live. It was not until maybe 5 years ago that i was able to find out what the casting #s meant on this one. Anyway,Sorry about the rambling. Geoff.
