My SD ('85) has ABS. I thought it was an option late '83 for US cars?

I've seen one '85 SD with airbag.
Anyway, my '80 380SE-5.0 has ABS too.
601/2/3 all came with block heater standard, just need the cord.
I'd run a W126 with the 617 over any W123 with the 617.