dont know about newages but all classics are the same size. though they are the same size may have different spring rates but they do fit.
i lowered my na legacy a few years ago and it was same kit as for impreza turbo. when i got my first turbo rears tyres were rubbing so fitted normal legacy springs to rear struts for a fortnight until i had received new lowering kit , worked fine but looked like it was set up for forest stages
hopefully some one will know what the newer ones are like but cant see them fitting different bits as it would keep the cost down.