long to shortbed, almost done

[ChevyMex]

Its 3 months since i found the longbed in the dump and since i live in Mexico and our trucks came with a weird mix of a usa bed and Argentina bed, i decided to cut it and try to make it shortbed, i found too much information in this site to start with this project and finally is ready to the paint. Is not an asy job but worth it. Is not a proffesional job, is more like an amateur job, me and my brother had some fun weekends (alot of 2XX, coronas and a small handsaw). Now, we are trying to align the bed to the cab, seems like we will have to play a little bit with the frame and bed supports, if someone knows how to do it quickly and have some measures please let me know. by the way, holes fits perfectly into the chassis.