[mr48chev]

Something just doesn't jive with that cross sill. besides the missing brackets/boxes it only has 5 holes for the bed strips to hold the wood down. That means six boards. YOu can see that the green one has 8 holes making it for a nine board bead.

Now going back and looking at fauXGT's bed, yours has been cut off on the ends It should be real close to 56 inches long. That is the reason for the missing holes too.

It's too dark to go get a photo of the one I have out where I can take a photo of it to show how much sticks in the bed posts. They go in the posts Past the three bolts that you see in Fauxgt's shot in post 3. If you don't have all the bolts in place and just try to weld it up the welds are going to crack out after a while if you put any miles on it. You can see the holes in the green one in your post that show how far they go into the posts.