Bed floor replacement options

[colohusker]

Okay, looking for some options besides replacing the entire bed on my '71 lwb. The sides and the front and tailgate are in pretty decent shape and I can save those, the problem is the floor of the bed is pretty rusty, with some holes, along with the cross braces under the bed are almost gone in some spots. What's involved in replacing the steel bed with a wood bed, or what's the best way to replace the bed floor with a new steel one?

Any and all ideas welcomed!