Does anyone with progressive sport lowering springs for the 4th gen max? Are these any good compared to eibachs or sprints? Do you think $147 for them is expensive or cheap from options auto salon?

Thanks in advance for any input on these springs.

 

Thats a pretty good spring, I seen on MaxSpeed Magazine that Stillen used those springs on their stillen Maxima, it was a beige colored maxima with 17 inch momo arrows. This was a long time ago I still have the Magazine.