Barracuda Bumper Bolts?

[74ChargerSE]

Getting ready to place the front and rear bumpers back on the 64 Barracuda, and not sure what size chrome bumper bolts were used to attach the chrome bumpers to the supports. I see different size chrome bumper bolt advertised new on eBay.

Also, anyone know what bolts were used to attach the supports to the car?

Thanks,

Larry