you should pair the supra springs with supra shocks. springs are similar dimension wise but different enough that you cannot use the supra spring on the SC shocks. If you try it will only work for the rear (or was it front) but not both there is a different in the mounts. Its best to just get supra shocks when using supra springs and SC shocks when using SC springs.
I have the SC nf210's and the ride is great but the drop could be a little lower. these look like a better solution if you are getting shocks anyways then you can get supra ones and use these.
1995 Lexus SC300 5spd Na-T ( TT Ecu Mod + a few others)