1969 Chevy C10 4x4:Frame Repair

[jgerih]

Hey Guys,
Ok so I got a 1969 Chevy C10 Short bed step side 4x4 and I noticed that the frame is cracked in a few spots near the rear axle. I noticed that this must have been an issue before and someone attempted to fish plate it. However, the inside of the frame channel, where the fish plate was installed, is rusting out and cracking. There are also a couple other cracks on the rear half of the frame. So I know you can repair frame rails but I thought maybe it would be easier to find another frame and cut it right behind the cab and transfer it to my existing frame. Then I found out how hard it is to find another short bed frame. I found that a company called No Limits had a rear rail frame kit but it is only for shortening a long bed and raise the bed floor 4 inches. So normally I would just scrap the pickup and move on but I put a couple thousand dollars into it before I found the cracks and there is quite a bit of sentimental value in this pickup. I know I should have looked harder before starting the project but lesson learned I guess. So my question is... What can I do that's fairly easy and budget conscious? Any advice would be extremely appreciated. I live in Nebraska and would like to have this done before the snow hits.
I tried to attach pictures but the site wants url pics and my pics are not on the net. Any advice on how to attach pictures would be great also.