I'm using wood in my 34. I'm redoing all that is there. And that is quit a bit. I'm using Oak myself. First off, if you consider the shape of the doors in the 34, and 35 pickups, it is pretty square. Second, the span, distance of the wood used, the expansion is only 1/4" or less. Third, if the wood being used, depending on type of wood, is from the same batch, and allowed to dry in the same area, cut, and fitted, with slip joints, and sealed on the ends when complete, there should be little problems. If you look close, the door is only a skin, that is screw nailed to the wood. The slight bow in the metal skin, will expand, and contract according to the wood structure. Even the metal will expand. And when mixing different thickness of metal, it will have different expansion rates also. Either way will work. On the wood, you need to check out the expansion characteristics of what you want to use. Sealing the cut ends, eliminates the expansion rate almost to zero.

Either return this forum to what was or get the HELL OUT!
Dead!