I may be able to bring this engine back. I've been looking at used and rebuilt engines and the used ones run from $1599 to $2250. A rebuilt engine will run $1999. This is about $800 less than the engine/transmission unit I was thinking of. The computer is not available for the 5.7 and the harness is different that year from mine.
The bottom end doesn't look too bad and there aren't any metal shavings in the pan. I'm going to clean the pan and pickup and then put fresh oil in it. I'll put a big honkin' magnet on the filter to catch metal and once it's to operating temperature, pour in a quart of kerosene and then run it two blocks to a friends shop for another, final oil change. I don't know how this will work on a second gen Magnum. I've done it several times through the years on other engines that have been run hot. I also found a leaking radiator which is why it overheated.
Honk if you love Jesus.
Text if you want to meet him.