Sorry guys, I work long hours in a cockpit so I can't check this site during the day. I am helping my father sell this diff. He put it in a 2006 330 ZHP for less than a thousand miles and decided to sell the car, so he pulled it out and now it is for sale. I saw this diff this weekend and it looks brand new. Here are some specs:
The diff is 3:46 LS, built by Jim Blanton, 40% lock-up, street/track, $1800 plus buyer pays shipping up to $100, I will cover the rest. Diff new is $3K+ if they want to know. This is a special design developed for World Touring and Speed Vision racing. I only have less than 1K miles on it. Reason for selling, sold the car, bought a hot rod.