This is a good guide from someone converting a transit minibus to a camper. No it’s not a VW motorhome camper, but there are some clear pictures showing technique, plans, fitting etc that can give you inspiration and ideas for your VW motorhome. The layout of any motorhome can be done using Google Sketch Up http://www.vwcampersforever.com/restoring-vw-campers/a-great-guide-to-interior-restoration-of-a-vw-camper
The transit blog can be reached on
http://abusforus.blogspot.com/search?updated-max=2008-06-14T10%3A30%3A00%2B01%3A00&max-results=7
You might also find the costings for each stge a useful guide too.
