Aeromods to a three-box saloon / sedan

[sallen]

On the kamm front I think kach22i is right, This is backed up in Houcho (where luckily for me this car features in a few places).

There's a pretty good diagram of the wake behind this model at page 314 fig. 6.4(a)

I got the cd wrong, specs say 0.3 for my model.

[aerohead]

Check out the 1986 M-B W124,Brabus Autosport body-styling-and -suspension package which netted Cd 0.2625.