the arm is damaged to the point where re-tapping it for a helicoil or threadsert is not an option.. those cranks have a fairly marginal tip cross section anyway...

The pedal is also damaged, and in such a way that re-facing the Shoulder would be difficult, and simply not worth it.

40+ year old parts, damaged beyond reasonable repair...... get some fresh parts for the venerable Super LeTour... they're great bikes when working properly!