Hmmm...tough call. I can tell you that in a 500E the seat mounting points are moved outward, so as to allow for the widening of the transmission tunnel. Seats are further apart than any other 300, but not by a lot (maybe 2 inches?).

However, the 500E seats were also available in the 300E Sportline models, so I'm inclined to think that they'd fit...can't think they'd modify the mounting points for Sportline cars AND 500Es. But, sorry to say, you never know.

As to where to find them, start calling boneyards...they are really nice seats, I might add, and if I come across a set I'd look to pop them into the wagon or D.

__________________
"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo