I haven't delved into their site much yet, but there's a new producer (Company? Single artist? Not sure on that.) of optional parts made specifically to fit Volks dolls. They go by the name "Erfolg Plus" (エアフォルクプラス. I noticed their auctions on Y!JA a few weeks ago, but lost my saved bookmark for them in a computer mishap, and today I decided to dig around and find them again. I found them (obviously), and the News subforum seemed the best place to share information about them. The sculptor seems to be focusing on making double-jointed arms for the Volks lines that are still single-jointed, but they've also got some high-heel feet and even a head. So far, they've made arms for YoSD and SD/SD13 girls, and according to their blog, they have finished prototypes for double-jointed SD13 boy arms. You can see their site here: http://www.eonet.ne.jp/~erfolg-plus/ And this is the shop on their site (to help the Japanese-challenged among us): http://erfolg.cart.fc2.com/ And here is a link to their Y!JA auction listings: http://openuser.auctions.yahoo.co.jp/jp/user/tyoubakunyuu Discussion thread here!!