1 of 6 UK-supplied 2.7 MFi Targas! Complex 'Homologation' regulations required that in order to ensure cars built to compete in 'production car' racing on the world stage were not 'one-off' specials, they had to be produced in sufficient quantity and to an agreed form and, in the case of the Porsche 911 Carrera, that was the lightweight, racing 'RS' specification.

Customers wishing to purchase a Carrera RS for the road had to specify the 'Touring' package that cost an extra DM 2,500 and offered the greater comfort of the 911S' trimmed and upholstered interior.

When those production targets had been met, the lightweight RS was discontinued but the Carrera name remained proudly on Porsche's top-of-the-range model, which in its new, series-production 911SC form mounted the 210bhp engine in a full-weight, fully trimmed body shell.

In 1975, if you wanted to order a Porsche 911 Targa, then the 210bhp Carrera version was the absolute 'top of the range'.

A rare right-hand drive Carrera Tar...