3.68 seems like the best area for me, although sacrificing a bit of normal usability (70mph speed) it is only really going to do that a couple of times at cruising speeds and so i think that is the way to do it. I shall give stealth a call and see the prices. It will be without a LSD as i cannot afford that at this time of year, its going to be an internal swap over only i think which is a shame. Thanks