yeah it's very possible, all you need to do is make a female mould. So if you wanted them to say renault sport instead of 2.0 16V. You could get a blank set, put a renault sport badge on them (providing it fits) then put some release wax on the part, and lay up some fibreglass so you have a mould that you can use to make more. OR you could get the bullets vacuum formed to make your mould.