Body frame reunited

Does anyone recognize what this tab with hole is for? Under upper floorboard in trunk left hand side only.

Don’t know but maybe exhaust hanger?

I reckon that would make sense, I think for the single exhaust configuration that goes through the frame?

This looks definiteley like the bracket for for the side emerging exhaust of an early model.
Best Regards

And yes, this exhaust system goes through the front crossmember.