Would it be worth it to have one put in? Anyone have one put in?

 

I'm pretty sure all 1998-2000 LS 400s have Traction Control and Vehicle Stability Control (VSC) as standard equipment, so no - it's not worth it at all if you're trying to reduce wheel spin in slippery conditions for your 1999. I also don't know of any LSDs that will fit on UCF20/21s.

 

here is a recent thread on this!
https://www.clublexus.com/forums/ls-...-97-ucf20.html

probably not worth putting one in unless you are very serious about drifting and/or road racing the vehicle.
though nice to have, it's overkill for a street car.

 

Go figure. Cool link, Timmy

 

yes they do have VSC but it's not exactly "performance oriented" or anything... if the wheel starts to slip it just cuts the power immediately, and slowly feeds it back in. it works very well when going through corners however.

as far as doing donuts or maneuvers of that nature are concerned, a limited slip diff is bascially essential. you can make the back swing around but it won't hold the drift. i've read though somewhere on here that eventually when the diff wears out enough it develops limited slip properties lol...

 

Its way more for slippery conditions