Arm Rest spacing on top 67-71?

[muddpile]

I'm going to be running the early style arm rests found in the 67-71 trucks on the custom door panels I'm building for my 72, but I was wondering if someone could do me a favor and measure the distance from the top of the arm rest to the top of the door panel? I want to make an insert like some had with the woodgrain and need to know how tall to make it. I'm guessing 2-3", but I'm not certain. Thanks.