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Can someone tell me what a 1974 Carrera 3.0 RS is? I've searched and can find plenty of info on '74 Carrera's (both US & RoW) and '74 Carrera RSR's. But, nothing on the 3.0 RS (the boards search limitation of three letters or more doesn't help in this particular case).

Is the '74 Carrera 3.0 RS just a wide bodied (930-like) 911 with a MFI 3.0 liter -- vs. the narrow bodied with CIS 2.7 liter (US) or MFI 2.7 (RoW) Carrera? I'm assuming it was a special car not imported to the US?

Also, is a '74 Carrera RSR the same as an IROC? Is the RSR similar in appearance to the RS?

And finally, is anyone familiar with the difference between the RSR and the RS?

Thanks!
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