I want to get a LSD to replace my open diff for my R154 is300. I know close to nothing about them and just started a very small bit of research about them like how different LSDs have different gear ratios. I'm looking to buy a is300 LSD or looking for info on which LSD to go with... Maybe where I can purchase said LSD as well... I want to keep similar if not the same gear ratios, I love the way my car drives and not really looking to get into different gear ratios... I just want to be able to hit some donuts and do a little drifting. I've looked for IS300 LSD on ebay and see different options like Manual / Automatic LSD, I've also read people say that IS300 LSD and open diff look exactly the same so you could purchase one off ebay and be getting ripped off??? Someone please help guide me in the right direction with any recommendations on which LSD to get, I'd appreciate it!