I ordered a custom t-shirt through cafepress with my Bonne Ghosthawk logo on the back. I came very close to choosing a tagline that said "last of the breed" since the Bonne is out of production, but I went with "The Spirit Lives On" and now I'm glad I did. Wouldnt have wanted to use a licensed GM tagline.
There is decal maker overseas that does custom designs in domed decals. Lefteris Designs I think its called, and he runs an eBay store. He's the one I've gotten the custom centercap decals from before. May have to look into a set of those for the Bonne.
Those Firebird logos are boss lookin, and I really like the one saying "dont mess with my Firebird" LOL