That truck looks clean, are you sure it's all original? The wheel base doesn't look quite right. If it is all original and it's drivable 4k isn't bad. Here is one I found on line, notice where the wheels are in the wells.....
1954chevy3100pkup052905.jpg
This says it's all original and runs also, they do look different...
I paid $750 for my '51 it didn't run and it's not a 5-window, but it was all there.

This is it today.....
SideView.jpg