For finishing, my plan so far is to sheet it with 1/8 balsa of course, and then fiberglass and primer it. For the final finish I am thinking of going with the metalized polyester tape method that will give it a shiny or brushed aluminum finish. The compound curves on the B17 aren't that bad and most of those areas are fiberglass paintable items or will not be bare aluminum anyway.

http://www.rcwarbirds.com/techniguespage.htm#q3