That is a SPOOL equipped 9" third member built with imported parts.

Even though this thread concerns STREET/STRIP rears, for comparison purposes, I sell COMPLETE, US made, spool equipped bolt-in Strange-60 rearends for $1795

BTW, a BARE 9" Strange-Trac 9" differential runs $995

http://www.strangeengineering.net/high-p...-35-spline.html