This is a 915/916 factory ZF fine-spline LSD I purchased from ANDIAL a few years ago. I believe is set to 40% https://pbase.com/image/135085642, not 80%, but I don't yet know for sure. Shipped to Bernie 06/2011 along with the repaired 916 tail-housing to complete the 916 gearbox.

2011 post on Pelican http://forums.pelicanparts.com/porsche-914-914-6-technical-forum/611232-916-gearbox-w-fine-spline-lsd-w-930-cv-joints.html#post6053515