|New Suzuki Samurai Seats||Seat rails are cantilevered off the gear box:|
The seats are from a Suzuki Samurai. The Samauri had the smallest seats I could find, they fit in the BD cabin perfectly. They weigh about 5 lbs more than the stock per-plans bench seat, but the comfort is worth it. Most of the extra weight is in the stock seat rails, which will someday be replaced with something lighter.
Nearly all salvage Samauri's have been recycled by now, but new replacement seats can be found: http://www.puresuzuki.com/sport_seats.htm
The side panels are very light, made from foam poster board: http://www.pacon.com/paper_products/board/FoamBoard.php
The foam board is covered with lightweight generic automotive trim carpet, "Silver" and "Dark Blue": http://www.yourautotrim.com/80wideozite.html
The inside door handles are generic VW: http://www2.cip1.com/SearchResults.asp?Cat=364