Textures are really not that hard to make, once you learn how.
Do a Google Image search for the parts you want, and then modify what you find. For example, try adapting this image into a texture:

But, if you cannot find anything or adapt what you find successfully, try making your own textures.
Some advice if you want to attempt this:
- Start by arranging blocks of solid color for which colors the glass should be. Get the overall shape about right.
- Add borders and details with color burn and multiply layers.
- You can make all of the details with fine lines or a checkerboard pattern scaled to a very small size.
Give me a minute, and I'll upload a PSD file of a light texture I made for my Mustang. That should demonstrate what I mean by this.