Would it work?

[Canadian chevy]

So I've ran into a slight problem midway through my build. I currently got a 76 k10 single cab shortbox the problem is I need a new box and I can't get aftermarket box sides in Canada so I went looking for a donor truck. I found a 85 c10 single cab long box for 350$ with a good condition box except its a long box I think from the picture. My question is if I swapped front ends, cabs, everything except the box would my 76 components line up on a 85 frame? Desperately need to know ASAP please and thanks. The white truck is the donor truck that I'm thinking about buying

 

[RetroC10Sport]

There are some differences in the frames, but they mostly have to do with the front bumper mounts. As far as I know, everything else will work fine. Not quite sure about the radiator support though.

And yes, that is a longbox.

 

[Canadian chevy]

Alright thanks for the help ill think it over more tomorrow if its worth my time and effort.

 

[MrMarty51]

Remove the front of the long box, cut it down, reinstall the front, IDK if that would work.

 

[Canadian chevy]

It's not as simple as just cutting the front I believe you have to cut a couple sections out of it

 

[Irishman999]

Google it, you will find alot of people that cut down a long bed into a short bed. I recall even seeing exact dimensions telling you where to cut it, thats alot easier than your current plan.

 

[89Suburban]

 

[Canadian chevy]

I've searched and searched for where and how much to cut I haven't found them so I'm just going to have to measure dozens of times and cut once. I picked the truck up Saturday for 300$ and tonight we got it unbolted and ready to take off with the engine lift.

 

[Canadian chevy]

I figured out the lengths to cut and where to cut so I measured it and taped it so I'd have straight consistent lines however I've ran into a problem I believe. Once I got to the bottom I realized that the bottom would not line up excuse it slopes in the back or I don't think it will. I've looked at other people who've done it and it lines up. Is the c10 box different than the k10 box any help is appreciated.