Pillowball upper mounts on Front and Rear and the rear Springs are on the shocks, instead seperated like oem...
Front:

Rear:

It's thier right spring rates over other coilovers I liked most; 10K Front/8K Rear at no additional hassle.
Installation:
As my first coilover, I followed, drsifu1's DIY on eibach (thanks man!).
Hint: Kit came with only Japanese instuctions, I had to guess the rest; first full installation had all springs uneven heights and second installation was uneven shock heights.

After balancing all height adjustments and 9 clicks back from hardest on both front and rear dampers, it's smooth like stock and responses better.

 

Wil they work on the sedan?

 

Yes it should.

 

looking nice

 

Very nice. Although I sorta question Buddy Club's use of an 8kg spring on the rear damper body. According to wheel rates, that's like having a 13kg spring on the rear OEM location. Seems stiff. But then again you probably can't do the conversion that simply. I'm sure the fact that the shock now directly controls the rear spring has to factor into the equation. How's the ride quality so far with your initial settings? I'm definitely interested in these and the HKS RS for now.

 

My sponcer had a car brought in and tuned the owner's buddy club coil overs. compared to the silk or a simple linear rate spring and adj strut combo, the buddy club coil overs were not enough. simply put, a similar car had silks and it felt way more stable. well, this said since this guy is geared more for racing and drifting. the buddy club coil overs were good enough for aggressive street driving.