As regards the Porsche 911 Carrera RS, the plan was to build only 500 cars but due to the high demand a total of 1590 cars were build (compared to 1265 3.0 CSLs + 20 race ones).
Detailed production figures for the 1972-1973 Porsche 911 Carrera RS:
1308 RS-Touring
217 RS-Sport
55 RSR 2.8 Gruppe 4
10 Prototypes
How many of these Porsches have survived today, I don't know but for the BMW 3.0 CSL almost 50% of all produced cars have been traced (status January 2010):
2285xxx traced cars 318 (500)
2275xxx traced cars 176 (429)
2275xxx traced cars 64 (110)
4355xxx traced cars 35 (57)
Race 2276000-2275981 20 (20)
Total traced CSLs (excluding race): 593 out of 1265 (approx 47%)
With the usual reservations
Cheers
Detailed production figures for the 1972-1973 Porsche 911 Carrera RS:
1308 RS-Touring
217 RS-Sport
55 RSR 2.8 Gruppe 4
10 Prototypes
How many of these Porsches have survived today, I don't know but for the BMW 3.0 CSL almost 50% of all produced cars have been traced (status January 2010):
2285xxx traced cars 318 (500)
2275xxx traced cars 176 (429)
2275xxx traced cars 64 (110)
4355xxx traced cars 35 (57)
Race 2276000-2275981 20 (20)
Total traced CSLs (excluding race): 593 out of 1265 (approx 47%)
With the usual reservations
Cheers