I don't, but I can make one. What I need is:
1.0 A high resolution photo of the lettering taken from a distance about 20 feet behind the truck
2.0 The letter height
3.0 The overall width of the lettering, from the left hand side of the Chevrolet "C", to the right hand side - top of the Chevrolet "T"
Look at the above links for ref.
You get me the photo and dim's and I'll make the CAD files.

John