I just saw this car, it is a '74 Carrera RS. It is one of 109 built by the factory for homoligation. Approx half were sold to race teams and the rest to street use. This one was for street use but has all the '73 RSR mods and evidence of special bits stamped with the chassis # so the FIA inspectors knew Porsche was not fudging the number of cars produced.
Anyway the reason this is interesting for this thread is that the car has the larger Dia rear shock mounts for coil overs and the mounts are solid welded. Also seen is one of the reinforcing plates on the cross bar.
