You get this sorted? check your ground strap on the passenger side of engine

 

I did! Well, the dealer did. Creatures, mice presumably, chewed the harness. I think me dropping the motor and jostling harness behind those big connectors finally caused a short. They also found an old repair in there that a PO had done, so I think this was a long time coming. Car drives great again. Even better actually with the new clutch and tune.

 

Happy days! The mice love to live under the intake on these cars and eat the wires.