Hood river rpod 177 rear rebuild help needed

I have a hood river 177 that has water damage from the spoiler. It pretty much destroyed the entire rear section and I had to tear out the entire rear section. The bonded wood is the question. What or where can I get either the measurements for the curved pieces that run all the way down and or what is the best thing to use to replace the curved wood that the rest of the cross pieces attach to? all advice is welcomed. At this point it is heavy duty tarped and trying to dry what remains out. I did reply to the other user that did pretty much the same thing but I have hope someone responds with a good idea for fixing this mess. I'm good enough to rebuild the rest just looking for options for the  curved stuff. 

A few years ago, we had to tear apart out Coachman Captiva and rebuild it due to water damage coming in through the marker lights. We basically did our own laminating by using 1/8” sheets of plywood and doing a couple layers that we glued, clamped and screwed or Brad nailed together right on the curve. We replaced/added a couple 2 x 2s as cross braces because the original framing  was stapled together scraps with air gaps between pieces, literally not supporting anything. Use stainless screws wherever you put them to prevent rusting. You will have to find creative ways to clamp across the camper to help get the curve into the new wood. Be generous with the glue! Hopefully you can reuse the outside skin. It’s a multiple person job getting it to mold to the shape you want, but you can do it! One thing about tearing apart an RV, you will KNOW when you finish that it far better built then it was when it left the factory!