L-Tuned 2001 Lexus GS 430
 

How do I find the suspension parts put on this car to keep the present look and height? The mechanic is telling me to restore to original height from factory. Please share recommendations.

L-Tuned springs were made by Eibach and the L-tuned shocks were rebadged KYB - might have better luck searching for aftermarket that are likely the same if OEM are no longer available anywhere

Okay, Thank you. Can I put this strut on with any lowering spring for my car? If so, what coil springs do you recommend?

https://www.kyb.com/products/gr-2-excel-g/

If you already have lower springs, you could just buy Bilstein B8 shocks to replace the blown ones and reuse the current springs. I have those on my car and they're excellent and I would highly recommend them.

Also stock height shocks like those KYBs you linked are not meant to be used with lowering springs because the valving is not set correctly. You can do it but they will wear out faster and the ride quality will suffer.

Ride quality with mild rates on KYB Excel G is ok, but you'll get a lot better performance out of the Bilsteins. The mildest lowering springs would be something like the TEIN H.Tech