60 hood rubber bumper installation

[SMR]

I had my 1960 hood repainted and the paint shop didn't reinstall the front rubber bumper stops. I purchased a replacement kit which came with two round rubber bumpers with a circular hole on the back side. I looked at the hood and it does have holes on the corners where I'm told the rubber bumpers should be placed. I assume I'm missing a piece of hardware, bolt of some sort, that the rubber bumper gets pressed onto. Any help on identifying what I'm missing or how they are installed would be a great help.

Thank you.