Sorry,

I just looked at the ad a bit more. They are out of an E320. DOH!

Hmmmm If you were sneaky you could go and take a test drive of a later model E-class and bring your tape measure. Be careful driving the newer model though because in my case a selfish test drive ended up with an extra car in the garrage. No no really it followed me home!!!

Another thing you could do is keep your eyes peeled for the seats out of an 1995 124 chassis car which have the nicer seat stitching pattern.

Be sure to check your colors though. I wanted a set of seats for my 126 and was checking ebay. Until I got my S320 I did not realize how much different Parchment and Palomino were.