I've finally decided on getting a set of Koni Sport Shocks and lowering springs instead of coilovers for my 2011 IS 350 F-Sport. The last decision that I need to make is on the lowering springs. I was considering getting the Koni Sport Kit + Eibach spring combo, but I'd prefer to get the F-Sport Springs to keep it OEM. I'm going for a subtle drop around 1 inch or less.

Since the F-Sport springs are made by Eibach, will they work as well as the eibach springs that are paired with the Koni yellows in the Koni Sport Kit? Or would I be better off just using the Eibach springs that come with the kit?