http://www.streetsideclassics.com/showcar.php/atl/889/1976-Porsche--911
not on mfi so missing an important part of the fun ... don't think the rear tail is correct - whats the chassis number - is it matching numbers .....
Looks like a US '76 with 2.7 CIS motor that someone converted to carbs, and stuck on the tail and "Carrera RS" badge. I think the stock motors were in the 150 h.p. range. Porsche's dark years.
The listing states "1976 911S packs a potent 2.7 RS engine" that makes more sense....however it's not an RS engine. It may be built to 2.7 RS specs, but it has carbs and not the REAL 2.7 RS MFI. Probably a ~$15k car.