Is the S2 prop shaft the same as the RS2?

[UrS4boy]

Have patience with me, please. In Canada, we only got a few 1990 and 1991 CQ and zero S2s and zero RS2s. (We did get UrS4 and UrS6 20vt sedans (saloons)). I have only seen on CQ prop shaft and was surprized to see that the front half was FRP or CF or something. I think my UrS4 prop shaft is all steel.

So I am curious as to whether the S2 and RS2 prop shafts are a) the same and b) whether they are all steel or partially FRP or CF.

Dave F.