Information on how attach a Badge/Emblem

I have a pair of old all metal Camper Special badgest that I wish to add to my pickup. What do you use to attach these? They still their pins on the back. Outside of drilling the appropriate sized holes for the pins, I'm at a loss.

clean the surface real nice, and use 3m double sided automotive/extra strength tape. Apply when the surface is cool, and in the shade. Make sure there isn't any wax on it or anything. Yes it's strong, it's the only thing holding my toolbox to my truck, and it won't budge.

Ditto that......

It's been about 20 years but my recollection is that the pins originally just pressed in by hand into a plastic bushing that was pressed into a hole in the fender. Kind of like plastic wall anchors.