For a long time I have regarded the lightweight variants of the 2.0S, 2.2S and 2.4S as inspiration. Not super hardcore as they emerged from the factory, but perhaps would have been purchased by folks who intended to do a bit of mild competition. And which had a few "sports purpose" parts. Of course some were used at the basis for serious competition cars too, but I'm talking about the milder ex factory spec.
For example one classic reference is the very early '69 lightweight car 119300009:
The 1970 marketing material tended to show the S in lightweight guise.
I believe that, initially, lightweight was the standard spec for a German market S (customers could optionally reinstate the luxuries, free of charge):
Consider also the M471 lightweight option offered for the slightly later 2.4S, as shown here):
My car incorporates a few gentle (reversible) references to those cars, including LSD, 380mm steering wheel and the 7R wheels on the back. So I was pleased to buy these seats today. Aged Recaro-style lightweights, similar to the M471 car pictured above, with nice patina (sun-faded corduroy - yes please) but not knackered:
Admittedly I’m blurring years and specs, but they feel right in the car. I like them as a finishing touch.