1971 charger bumper to frame bolts? 3/4 inch?

Its been a few years sence the car got striped down for paint
Well car is back from paint and seams the bolts that hold the bumper brackets to the front frame rails have been miss placed
Do any of you know the size/thread. Il go down to the metal place and buy some so I can put the front bumper back on

I would have to think they are the same as e-body?

These are the correct ones for 70-74 e-body

Thank you