There is one thing you may be able to do. If there is any way you could obtain close up digital images of the graphic from a good quality camera, it would make the job of making a decal far, far easier for someone skilled in PhotoShop. Trying to work from a small 72dpi image from the web is very difficult, time consuming and never as accurate. Just keep in mind that, should the chance come up to see one of these in person, good quality, large photos from all angles and measurements would get you 80% of the way to your decal.