See updated pics below....
Thoght I'd share what I learned today as I've seen this question come up a few times.
The Eibach Pro kit (1.6" drop) will not interchange from the 300 (non hemi) to the 300C.
BUT
The Sportline kit (2" drop) WILL interchange and are the same part number.
Difference is the Sportline kit in the 300 base will sit .2 higher than the 300C application. Esentially making it a 1.8" drop for my 300, which is exactly what I was looking for to avoid that raked look I see in the 1.6/1.5 pro kits.
That said my order has been placed and we'll see in about 7-10 days. Pics to follow.
source: Able from Eibach USA
Cheers and good motoring!