Got a set of Espelir Springs couple days ago, Finally decide to install it today. At first, I was kind of skeptic on whether to get professional to do it or myself But after talk to some of my friends and also saw this thread : https://my350z.com/forum/showthread....threadid=51767 So, I decide to give this challenge a try.
I follow every step, and I also had a Master Tech guiding me, on top of that, I had access to the lift and every tools there is. So, it made it really nice and pain less to get it done.

The whole install took me about 3 hours, and that's with learning it at the same time. I also got a Spring Compressor at the AutoZone, you could rent it for free with a $40 deposit!

The springs is a Progressive type made by Espelir, the cool thing about this spring is that it only drop 10mm, which is about close to 0.5 inch. So, I could still use my stock camber rod to adjust alignment back to specs!

After I got it installed, and took it for ride, WOW!! It made a big difference!! It has eliminate a lot of the bouncyness, and harsh ride when hitting a pot hole, and going over the rail road!
and the handling is awesome! I really like the quality of the springs! here is a couple pictures.......

 

Eventhou the box show Active Super Down, but it is the Active GT that is applicated for 350z.....

 

I used a towel to wrap around the spring just in case it decompress too fast...

 

Here is another picture after the spring has removed....

 

here is a picture where I remove all the bolts on the suspension arm and the sway bar........

 

After remove the front suspension, I clamp it down to compress the spring......

 

this is what it looks like after installed on the front......

 

here is a pic of what the front look like after the spring is installed... You probably won't able to really tell that is have been lower until you stick your finger between the gap and compare to another stock z...

 

here's the rear one......

 

here is a Final rear angle view....

 

Very awesome!! I was just looking a those last night on the web, and was pumped that they didn't drop the height that much. Where did you get them and how much?

Bring on the Koni's!!!!!

 

I got it from www.projectnissan.com for $175, I am really impress with the springs!! you could call them at 214-575-9258 to order some, I'm not sure how many they have left. On top of that, They always have great services as well!!

here is a link for the Espelir spring, from what I heard the spring was initially created for big oversizes wheels as well..Notice they are carry by Mackins, same as Volks...

http://www.mackinindustries.com/espelir_spring.html