Scott, The inside width is 50" and the leading edge of the fender to the front of the bed is 16", The Stock rear overall width from outside of fender to outside of fender is 74" (12" from bedside to the outside of the fender) and 19" from outside bottom bed to top of bed side where the rail starts(14" from top of bed wood to top of bed side... 3/4" wood so that would make it 14 3/4" inside)
22 3/4" is the bed height from ground to floor of bed (but mine has been lowered)
Hope this helps Scott
Todd