Hi guys. Just pulled and replaced the wood on th truck. What a project! I think? I may be missing a part and wondered if anyone knew for sure. Upon dissasemblly I found a cross section that was tied into the wheel tubs for bolt mounting. From the factory were two cross sections present front and rear? I had a row of bolts without cross member or frame to tie into further back from the cab. I used huge washers on that row and Im good to go but if I am missing a part I'd like to know so I can be on the lookout at the swaps. Thanks!