Coilover options?

I've been looking around for a set of coilovers that go low for the gen 3 prius and there not much to choose from. Tanabes don't go low enough and all other options are JDM market. So looking around, I noticed that the gen2 xb sway bars fit the rear suspension so I'm wondering if anyone has any insight on whether the struts and springs from a coilover set would work as well.
I've looked at some pictures of the coils from the xb2 and it *looks* like the front and rears are the same but I don't have measurements to make sure. Has anyone tried testing another set of coils from a different car that shares the same chassis successfully?