An end sill cross brace was added to each corner. This helps stabilize the car end sill and supports the decking. These
were toe-nailed into place, as was done with the originals. Not the best way to do it, but it seems to work.
One of the car end sills in place. The frame has taken it's final shape.
A close-up view of an end sill cross brace.
A view of an end sill cross brace between the body and car end sills.