i just had my tein s-tech springs installed over the weekend. overall impression, the ride is softer. visually, the drop is barely noticeable. for me, i went with this spring because i do not want to invest in a coilover system or have to do any other suspension mods along with these springs. so for me, i guess they did the job in making the ride better and slightly decreasing the wheel well gap. i guess visually i am a bit disappointed by the drop, just because i thought it would be more noticeable

 

give it a few weeks to settle... I'm happy with my drop, maybe you need to go lower... Anyways, I have the same setup:

 

i think it is starting to grow on me... i just went for a drive, and i noticed a big difference in the ride. alot smoother! in terms of aesthetics.. i think this is the only way to drop and be practical, so im sure ill be happy with it in the long run. looking at the car from close up, thats wheni dont notice the drop as much. from further away, it is alot more noticeable. so, to revise my first post..... im overall happy with the drop. those who want to give their car a more slammed look, the tein springs are not for you!

for the installation, i went to cj motorsports in west chicago. i would highly reccomend them to anyone wanting to mod their z. i first contacted genesis racing and development (grd) in naperville, and they quoted me 225 just for the install. CJ motorsports charged me 125 for the install, and their service was excellent!