Hello

I have a running 94 sc400 and a non running 94 LS400. The LS 400 has coilovers on it, I have looked up if they would fit my sc and could not find anything on it, I do not know the brand of them eather.

 

The easiest way to determine that sort of thing is to look up the cross-compatibility for stock components. E.g.:

https://www.rockauto.com/en/catalog/...k+/+strut,7556

https://www.rockauto.com/en/catalog/...k+/+strut,7556

Click on the part #'s and you'll see they don't cross over. If the stock stuff isn't compatible, aftermarket stuff probably isn't (without modification), either. But, that's still not 100% definitive, as Supra suspension fits the SC but isn't listed, probably because it's not factory spec.