If anyone starts fabricating the inner stub shafts let me know and i'll be your first customer.
Otherwise I will have to buy the DSS ones and have pressed-on sealing rings machined to fit the larger explorer seals.
http://www.ebay.com/itm/Driveshaft-Shop-108-FD-I-31-8-8-Inner-CV-Mount-for-108mm-or-Porsche-930-CV-Joint/131781341331?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649