Mike,
Your Stang is looking really good so far! Nice work!
About the wood graining, it's a tip I picked up from the WWI biplane building guys. Pretty simple I think. First you start out with a base color like tan. Then you use artist oil colors, for example burnt sienna and paint all over. Next you use an artist brush or any brush with bristles that's a bit harder and start making the wood pattern in the oil color. Whipe of excess color from the brush and continue until your satisfied with looks of it. When the oil color has dried, you can seal it with clear cote, or for wooden props, perhaps clear orange. You can try with other colors to get different tones of wood.
Thanks, I'm glad you liked it!
Cheers,
Azgaron