This page is the extent of the info I've found on this thing online: http://homepage1.nifty.com/TBR/prc/prc-08/01.html
Edit: Scratch that, found a lil more: http://ameblo.jp/porsche356a911s/entry-11901179519.html
Edit: Scratch that, found a lil more: http://ameblo.jp/porsche356a911s/entry-11901179519.html