randy:
Sorry for the delayed response. I've been kinda busy.
I used treated, 3/4" plywood. I had to cut it because I couldn't get it under the edge stripping on the fenders as a whole piece. I could have done so if I removed the bed but I'm doing this alone and it would have been a huge pain. But actually I didn't have to cut it down the center because I changed plans and put some cedar strips along the fender edge which hold the bed to the frame then I just layed the plywood in, went underneath with a can of spray paint to mark the bolt holes. I then removed and drilled the plywood, counter sunk the offset washers and bolted it down. I originally had planned to have the plywood go underneath the fender hold down strips and that's why I cut the plywood down the center but it was easier to put the cedar in there then lay the plywood in after the fenders were secure. It will also make it easier to fix if and when that wood needs to be replaced.
I hope that this makes sense. :rolleyes:
