Replacing some emblems on my '68. Noticed the trunk letters and fuel door bird are on with acorn nuts, self cutting I assume. Is there a source for these as replacements? Can they be reused? I don't want to try and reuse them if there is a chance they won't hold and then mess up the studs on new emblems.

Also, on other emblems, you use regular self cutting nuts with a flange, correct? Is it advised to use ones with the mastic sealant? What sizes are used on emblems for a '68 Firebird? I think I will just end up buying an assortment, but I'm also tired of having loads of extra hardware around as a result of buying a big assortment or buying more than what I need because I wasn't sure what I needed in the first place.