i noticed that the product # for the s-techs on a g35 are different than a Z.

http://www.tein.com/stech.html

i got these s-techs from Alius_G for free when i purchsed his konis.

https://my350z.com/forum/southern-california/184659-fs-tein-s-techs-for-g35.html

i was going to install them but i don't know if i should. should i just sell it? i dunno...what to you G guys think?

here is the drop and specs:

http://www.tein.com/ti/p30.html

his car with the s-techs:

http://www.cardomain.com/ride/2316017

here is a good link to spotting fake tein s-techs:

http://www.tein.com/counterfeit/warning.html

 

Assuming you own a Z, I'd sell them. The springs rates are a lot softer on the G35 version, especially in the rear.

 

so it's better just to sell them huh? the thing that tipped my off was that the s-techs for the G35 are 1" drop...the ones for the Z are .6"...

 

It's up to you. Lots of G35C guys run 350Z springs and it adds 1/2" to the overall drop, so I assume the reverse would have an opposite effect. It would probably end up being about a .6" drop. My pet peeve about the Tein springs is that they drop the front more than the rear, although only slightly. I personally think you would be better off pairing those Koni's with either RS*R or Hotchkis springs.