Are the bodies of the 1982 380 SEL the same as the 1982 420, 500, 560 SEL?

According to the Yakima website, they have the 1982 380 SEL listed separately from the other vehicles for rack information.

I thought all of the 126 models were basically the same.

Can anyone explain the differences?

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Dr. Brad

2003 C320 4Matic Station Wagon
2002 C240 Elegance
1982 380 SEL Star Certified