Looking through the club archives, there is much discussion on this topic. I also found a superb write up on the variations of the diffs Nissan made + types of LSDs used. Thought it may be of interest: http://forums.hybridz.org/topic/504...hp-torque-r160-r180-r200-r230-diff-mount-faq/ So come on experienced heads, what would you use on a road going R200 diff without silly torque / power? Also it seems like LSDs have produced diff whine in the past. Would something like this just drop into a long nosed R200? It looks like a good / relatively inexpensive option. Although I know you get what you pay for so what's the catch?!? www.ebay.com/itm/352047622866?_mwBanner=1 From what I gather: Clutch versions (CLSDs) need maintenance,generate lots of heat and can be quite aggressive , especially at low speed causing understeer. The Quaife ones are great but being one way have shortcomings when wheel lift occurs. Although I can imagine the lifetime warranty (even if raced) is attractive to the club "strippers". OS Giken - awesome but out of the average price range. http://www.ebay.com/p/os-giken-supe...-s13-s14-ka24de-mt/712699192?iid=221965837121 KAAS/Cusco- plate based but durable and do 1.5 and 2 way, with the 1.5 being the most suitable for the likes of me just "road racing" and the odd track day. Nissan Viscous LSDs - are the smoothest but apparently generate lots of heat and can cause leaks / need some kind of external storage for the LSD fluid (is that last bit right?) hence you can vary viscosity.