It was great getting all of the feedback about what to do with the panel rear interior. Here's what I ended up doing...
1) Striped the wood floor and stained & poly'd it
2) Put Peel 'n Seal throughout interior - side walls, roof, under dash, on front floor... even put strips in side walls through access panels.
3) Glued styro panels (the house foundation type) over Peel 'n Seal on side walls
4) Glued jute carpet padding over styro and over entire interior roof and front floor and under dash
5) Screwed 1x3 stained poplar strips along side walls and across ceiling.
Overall I'm really pleased with how it came out.
Pics heah:
http://fernscountrystore.com/fun/ferns-fotos/bella-the-ferns-wondertruck/?nggpage=2
