Overlander toilet and plumbing, skin repair, data sources

[jebbco]

I have a 1974 27' Overlander parked next to a jobsite. I want to install a standard toilet in the Airstream's bathroom so we can connect into a septic system during the construction. I need advice on removing the Airstream toilet and panels and getting to the plumbing behind and below it. Also any advice on the holding tank(s); grey and black water etc. Any help would be appreciated on finding sources for owners manuals, schematics, etc. I also need information for replacing some dented skin panels where the Airstream and a tree mixed it up! The Airstream is my second home and it's great being part of the community! Thanks, jebbco