360 Magnum production date question

mbaird said

Agree but don’t overlook the LA magnum blocks that had roller lifters and LA heads plus the oil feeds for the rockers . I just found one for $150 and will be going to get it on Saturday. SCORE!

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That should be a different casting number than the one OP is asking about in this thread. It will likely be the 92 model year LA casting number mentioned in the thread in post ten above. Start a thread on that one when you get it. I would like to see what it is.
I have a 92 casting block in my Dart and I don’t think it had Magnum engine mount bosses, only LA ears.
I also have a 93 D250 pickup with a 5.9 Magnum and a known history. It uses the LA mounts, has the bosses for Magnum mounts, but the Magnum bosses are not even drilled.