I received the same email. I had contacted Vittoro regarding a rear locker several months ago, explaining that the only difference between the front and rear carriers was the size of the ring gear mount. But I never followed up on his request for dimensions. Maybe he followed up on it? Regardless, it's good to see there's another option. But as DRX noted, $800 plus international shipping is a large chunk of change. You can get a Track Finder locker installed in a carrier for less than $800, including shipping from Korea. For the record, the ring gears are 10 bolt on the front and rear. I'm working on installing my 5.38 R&P sets and have both diffs sitting in my garage... <img src="/forums/images/graemlins/kewl.gif" alt="" />