Q: Ford Solenoid Switch in Lieu of Mopar Starter Relay?

Well that's sorta true, but in reality at the (very low) rate of failure of mopar relays, it's simply using a sledge hammer to drive tacks. Not really needed. the beater "White Whale" dodge pu has nearly 200K on it, using a tiny Bosh relay to drive the Mopar solenoid, and from the looks of it, never been changed.

That's a pretty good analogy.......also akin to running a Dana 60 in a street driven A body. Since when was overkill really a bad thing? lol