[itstock]

At a minimum, I was suggested Mfactory by the local guy for an aftermarket unit, with the preferred unit being OS Giken. I didn't even ask about OBX because all of the reviews that I had read stated they were complete junk. The used LSD wouldn't even be a consideration.

You are talking about $300-600 for what you are looking at, with the lower end being used and in unknown condition. The Mfactory is $900 for a brand new, warrantied for life helical.

It's the 188mm lsd unit, but I was told to get the one for the original gears/gears being used do to shims and what not (I don't know how true that is but I trust them as it's what they do). So you would want the E36 325 or 328 for your current open rear.