Wtb: LSD new or used, oem or aftermarket.

Looking for anything in good working condition. I'd really rather have aftermarket, mfactory, quaife, or maybe obx as long as they are in perfect working order. If its aftermarket I'd almost rather have used, I guess if its oem I'd rather have used as well. I also have a few things if be willing to trade an add cash. Let me know what you have. I have the option right now to buy a brand new in box mfactory LSD for $500. Just was seeing if I could find anything cheaper. For faster response please text me at 928-651-3303