I'm helping a buddy of mine with making a wooden truck bed for a truck that he inherited from his dad when his dad passed away. It's an old Dodge 1972 Crew Cab and the old wooden bed had rotted out of it. My buddy is doing all the body and mechanical work on the old truck and he wants me to machine some Oak boards for the remake of the old bed. I have a length dimension but I have no clue how to get the board "width". Do any of you have any idea how to figure board width of this old truck bed? He said that he thought the old bed had 8 boards in it but that's all we know right now. Any help from any of you would be greatly appreciated.