I'm looking to get antiroll bars for my 91 ls400, does anyone know of any good places to start looking online. Also what sort of performance should I expect from this, and is it even worth the money.

 

What are you trying to accomplish? Measured\instrumented performance improvements? Or making the car "feel" sharper?

The car has very soft springs\shocks, stiffening the sway bars won't do very much without also replacing other suspension components to match. The main purpose of modifying sway bars is to address one shortcoming of a normal street car: Adding more rear bar will increase oversteer. Adding more front bar will increase understeer. I did this on my old Honda, I added a stiffer rear bar and left the front one in place which really made the car a lot more neutral and less prone to understeer. It felt sharper, but without sacrificing any ride quality because I left the shocks alone. (well, the next owner ripped all that out and slammed the car on coils, but whatever)

If you just want the car to feel sharper and less like a land yacht, one option is a stiffer rear sway bar. But that comes with it's own challenges, as I find the LS400 is quite neutral as it is out of the box with only minimal understeer. I don't think it needs very much rear bar. The next option funnily enough bigger wheels. It will perform worse in instrumented testing, but if you go to a much smaller tire sidewall the car will turn in a lot sharper and feel more "poised".

This is a good thread to read:
https://www.clublexus.com/forums/ls-...ts-needed.html

At the end of the day tho, the car is a luxo-barge. You'll never make it into a E39 M5.

 

Looking for this part for a 96 LS 400 (coolant line). If anyone can help me out it would be greatly appreciated.

Also, does anyone know where parts for vehicles this old can be purchased.
Thanks

Looking for this part.

 

I already have Megan racing coil overs on the car, they're set to the softest setting for a nicer ride, I was hoping with the sway bar to reduce body roll without sacrificing the nice ride of the soft setting. I'm assuming if I set the dampening to harder, the body roll would be reduced?
I'm already looking to get off the stock wheels and to get something bigger, but after just buying the car, that would have to be later.

 

Looks like that part is discontinued. Maybe someone will know of an overseas vendor that might have it. Or ya might need to find one at the junkyard if ya feel like removing another intake.
Ya should have started a new thread (newbie mistake) to try and find the coolant pipe ya need seeing how this thread the OP is looking for antiroll bars. Maybe one of the mods will move it to a new thread.

But to answer your other question; Looking for older parts, seeing how you're from Connecticut, I usually go to Chuck & Eddie's in Southington. They always have a few LS400s there. (years differ) I also just gave them my 94 recently.

 

Yes to everything you said. But it's not a free game changer - to get a stiffer more responsive ride you need to give up some softness and comfort. You can't have your cake & eat it too like you can with modern cars with adjustable dampers and far more rigid chassis.

I personally found bigger wheels, while it compromised ride quality too much for my liking, did sharpen up the steering feel and initial sharpness of turn-in for the car.