[69 C10 LWB]

I got the bed primed and the first coat of paint on it this weekend. I was also able to get it bolted back down so its driveable again. I had to pull the bolts from the bed so I could cut them down and weld the nuts on one side. Now I start on the wood. I have this toolbox that came off a service truck after someone got a little too close with the crane. Trying to decide if I want to mount it to the truck of not. I will have to do a little trimming to get it slid up closer to the front of the bed. What do you all think? Box or no box?