I searched and found the "parts that fit our cars from other cars" thread and i found this thread:
https://www.clublexus.com/forums/gs-...300-supra.html

The last one says the sc/supra suspension wont work but the other says at least that supra mkiv will.

Will sc300 rear struts, bolt and work in my 93 gs300? Has anyone done it or used them before?

I also searched KYb to see if they had the same part number but of course they dont because of spring rate etc. But they look the same except for the length of the middle bolt/shaft.

 

They are a bolt on affair bud. My wife has sc300 AGX shocks with Espelir lowering springs on her gs300. This is the only pic i could find before she put on the wheels she wanted.

 

Thanks man great info. It def. looks like a drop in ride height. Be a safe bet the changing to sc struts all around would be a decent drop.