In case you were wondering, yes, everyone hated replacing the bed on their truck.

Rachel took on the thankless job of replacing her bed, 
here is a link directly to her bed replacement on her 56 SC.
Excellent step by step pictures
bed.jpg (112828 bytes)

This used to be a link to a very nice bed replacement page...unfortunately it is no longer on the net.
bed.gif (51862 bytes)

Simon Olden did the bed replacement as was nice enough to provide me with pictures as he went along. Here's some of that-
"You may notice that I welded every flat instead of the factory every other one.
The panels were okay but I made sure they were weighted down well and once
cramped in position I welded from the outside edge, towards the middle,
going down the length of the bed  then starting at the next along."

bed1.jpg (92096 bytes) bed2.jpg (88292 bytes)  bed3.jpg (64826 bytes)
bed4.jpg (56248 bytes)

Part sources:

Wolfsburg west,   Carry entire replacement sections for you bed, they run  560.00 US for the whole set (plus shipping)

ISPwest also carry's replacement sections as well. They charge around $150 per panel. (also around $100 for shipping in the U.S.)

Wolfgang int offers a nice alternative for around $50. They sell small replacement panels ( 15 1/2" wide and 59" long) for those trucks that only have a bad spot of rust in a certain area and don't need a complete or even partial bed removal.