I understood late cuppies were 312-15bhp vs 300 of CS. different matter cage on cuppy an extra side bar,,, don't forget airjacks fitted (extra weight) air jack connector and power cut out are on front valance by windscreen.
harder suspension rate with cup, billet top mounts and solid rear subframe mount.
speedlines are centre lock rather than 5 bolt.
cuppies came before the RS, so an early cup car may not have full engine spec, look out for regular carrera front wings with grommets where the headlight wash goes, cheaper to replace than RS items.
When i was looking for a cup or clubsport, Paul Howells was very helpful, he advised from his own experience that a cup car is not really a prospect for the road. As I drive to trackdays that more or less ruled one out for me.
There are quite a few cuppies on the road, you need handbrake, quietish exhausts and usual indicators working etc to get them through an SVA.
With respect to values, as Vic says prices are all over the place and you need to evaluate each car on it's own merits and your intended use.
Hardly any cars are standard after 10 years, I think a CS is worth more than a cuppy, partly because there appear to be 3 times as many cups made.
I bought a standard CS and am more than happy with it on road and track.
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