Hi David,
here are some details about the CS,
http://www.968uk.com/porsche-968-club-sport.htm
The Sport was produced on the same production line as the CS so is very similar in the chassis and suspension, front springs and rear torsion bars are 20mm lower than the Coupes.
The key difference between the CS and the Sport is that the Sport has the bigger wiring loom and battery for the electrics that have been put in, electric windows, tailgate release, central locking etc.
It also has the occasional rear seats, unlike the CS and it has the comfort front seats. Generally the Sport is a CS with the options added in (for the UK market only-1994).
Coupes usually have the standard leather or Sport seats.
Coupes have the airbag steering wheel, the CS and Sport have the CS steering wheel(no airbag).
Coupes have an analogue clock in the centre console and a digital temp gauge on the dashboard, CS and Sports have a digital clock on the dashboard with a stopwatch.
Coupes have standard sound proofing, Cs and Sports have reduced sound proofing.
Coupes have updated door cards, CS and Sport have the old 944 door cards.
Coupes have the 6 speaker stereo system, CS and Sports have 2 speakers.
Not definitive but it gives you an idea.[
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Cheers,
Stuart.
