Just a note.
I track a 2014 GT 500 OEM drive train. 8,800 miles on it. My OEM 10" dual disc clutch just blew a pressure plate rivet through the bell housing.
I shift at the recommended rpm of 62-6400.
Does the 350 have the same clutch?. If it does, inspect the clutch bell housing before running.
Ran perfectly even with one rivet head missing, I couldn't tell there was damage until seeing it when changing the oil.
At ford now to see what they will do.