Longbed to shortbed conversion

[ChevyMex]

Have you ever seen a thread to short a longbed (not the chassis, only the bed), since i am in Mexico it is so hard to find a good rust free shortbed but i have seen a lot of good and solid lonbeds (There was a period in 1995 where the Govern allow th Mexicans to import work trucks, most of these trucks were 67 -72 longbed trucks ), the guy in the junkyard is asking for 100 - 200 dlls.

Since this part is the only thing missing in my project i will go ahead and buy the long bed and try to findout the best way to cut anf weld. I will post photos.