The ones on the wifes' 400E appear to drop a bit at the ends,,, which would make sense I guess. I doubt if a sway bar would bend over time,,, but I've been wrong before.

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95 SL500 Smoke Silver, Parchment 64K
07 E350 4matic Station Wagon White 34K
02 E320 4Matic Silver/grey 80K
05 F150 Silver 44K