If you are going to make just one stock the easiest way is to take your existing wooden one and wrap with fiberglass. Sand it well, then saturate with epoxy. I used one very liquid "Cold Cure" from industrial supplier. Do Yellow Pages search and find fiberglass products dealer at your area, they would be happy to sell you product even if you don't have account with them. Let it cure and sand again. Repeat process untill you satisfied (there is no finish line on a road to quality). Reshape stock, add more material where you need it. Wrap stock with fiberglass straps overlaping each other. Sand. Spray with texture coating and paint. Done.
Something like that...
http://img508.imageshack.us/my.php?image=picture003kf0.jpg
http://img174.imageshack.us/my.php?image=picture001lw4.jpg
Something like that...
http://img508.imageshack.us/my.php?image=picture003kf0.jpg
http://img174.imageshack.us/my.php?image=picture001lw4.jpg
