Where have all the Magnum parts gone?

The Magnum engines haven't been made for 22 years, plus, the MP pieces haven't been made for longer than that. There isn't much left.
So?
Look whats still available from the other 2 of the "big 3" even to this day...
And really Mopar hasn't come up with much that's better than these were... I'm just not into sensors, black boxes, plastic timing chain guides, and such...