The Firebird specialist decal guys like Phoenix Graffix and similar sell them so should match theirs in colour, size and quality, not just random gold foil rolls from SuperCheap!
If you're still on Camaro-firebird.org I think Jim with the white 73 had foilers and recently repainted it, not sure if he refitted them though. Actually, it was a 74 and just refitted the 73 front hence the paint job.