I'm a little confused right now, want to order the Eibach Pro-Kit springs for the 2011/12 GT500 but I'm getting 2 different part numbers.
I tried calling Eibach twice today, both times on hold for over 10min

There website list part number #35115.140
This is the same part number for 07 - 2010 fitment, and a few months back they did not show a listing for 2011/12 fitment. So I guess they just decided these will work on the 2011/12 and did not re-design for the lighter front end of the 11's.

Now, some vendor sites show a part number of #35128.140 as the fitment for 2011/12 GT500

So what gives?

 

Got a confirmation from an Eibach rep today, the part number is correct on their site #35115.140. These are the same springs that will work on the 07-10 cars. They tested them on the 2011 and approved them for use. They did not re-design or change spring rate for the 2011. Not necessarily a bad thing, but I really though that they would be different do to the lighter front end.
Oh well, I'm probably going to try them out anyway.

 

Let us know how they work out. I am thinking about doing this also.