Personally for an MR2 I would just go for a factory lsd. I find the mechanical lsds like cusco, kaaz, etc...suit certain applications like drag racing and drifting but can cause a lot of issues for general drivability. I've driven a few cars with different aftermarket lsds in them and had a 1.5way in a car, didn't like it. I guess you have done your research and know what the difference is between, one way, two way and 1.5's and when they lock/don't lock but I've personally found they give way too much rear end grip when going though a corner if they lock and cause understeer, unless your drifting a corner of course. I do love them in drift skylines and drag cars though. Launches will be awesome.