Shortening the bed, literally just the bed

[Nima]

Hi:
I love my 67 C20 and I have done a lot of upgrades such as 8 lug disc breaks, new wirings and etc,but its long bed is really too long for my garage. Beside the fact that I prefer the short bed look and also I have few big dents on one side of my truck bed. Since I don't have the help, money, tools and space of going through the frame shortening that other guys do, I decided to risk $50 and think differently, but of course I need help to see even if this can happen. This was there is no need to shorten drive shaft, cut the frame and etc. Anyways, I noticed that the 13-14" of the end of my frame is just the extension beyond my 1/2 leaf spring shackles. Yes, initially was spre tire location but guys are putting fuel tanks in there now. So What happens if I just cut about 12" of either side of bed panels and cut the end of the frame?
So, I bought this rusty (really surface rust) bed side for $50 and ended up with this:
I cut 11.5" out behind the wheel well, cut one inch section and tac welded inside since just incase my cut lines are nor straight and I end up with a big gap (which I did!! I guess this is a learning curve and I have never done a body work)