Off the top of my head...

560SEL as standard...

1. Heated front and rear seats
2. Rear seat reclining feature
3. Self leveling rear suspension
4. Limited Slip Differential
5. Leather trimmed steering wheel and shift knob
6. Burlwood veneer trim

300SDL has none of those as standard. Optional were...

1 and 2....

350SDL had 5 as standard....

Optional was

1 and 2, and 3 and 4...

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1987 300SDL (324000)

1986 Porsche 951 (944 Turbo) (166000)

1978 Porsche 924 (99000)

1996 Nissan Pathfinder R50 (201000)