I agree a lot to learn. I have a hemi water block with wedge mounts. 2468330 M MCF block cast #6K29 top pad is stamped HW1194. Whats confusing is I don't believe you could get a siamese hemi block with wedge mounts so why would they have them? The siamese blocks are a total different casting than a water block. They have Mopar cast on the side where the water block doesn't.