Bed height on m923a2

[Rickmo]

I have used the search feature, read the TM, sacrificed my prized goat on the alter of military vehicle knowledge, and tried trigonometric calculations using the shadow angle on m923 photos. I have not been able to find the bed height of the truck. Could anyone help me out without busting my balls for my obviously inadequate research?
Thanks!

 

[Scar59]

TM 55-xxxxx-14-1 M939 55.8" M939A1/A2 58.3".

 

[Rickmo]

Thank you

TM 55-xxxxx-14-1 M939 55.8" M939A1/A2 58.3".

Thank you for the direction. I downloaded the manuals but must have missed it. I should have looked more closely and saved my goat!

 

[mcmullag]

I just measured it in my gravel driveway, took three readings, it is about 4'10", floor of cargo bed to ground.