If none of those unique Porsche 911 RS models we showed you before float your boat, Silverstone Auctions announced the addition to two special Porsche 911 Anniversary models to their October 25 sale. They are both restored and rebuilt by UK-based Porsche Centres.

The first offering from this Porsche 911 Anniversary duo is a 1981 Porsche 911 ‘930’ Turbo in Guards red and black, restored in six months by the Porsche Classic Restoration Centre in Leeds. The body on this car was stripped back to bare metal and painted in the original color, while the engine and brakes were rebuilt to the original specs. Many of the original parts have been retained, but a new turbocharger is fitted for optimal performance. This car will be sold with a guide price of £100,000 – £115,000.

The second and more interesting 911 up for grabs here is a 1977 Porsche 911 ‘Project 50’ based on ‘ultimate 911 RS’ by Porsche Central Operations in Reading. Not only was this car restored, it was also upgraded and made bespoke with the addition of a 993 engine, and 930 3.2-litre Carrera brakes. Finished in Viper Green paint, this special 911 is expected to fetch £125,000 – £150,000 which is roughly half of what it would have cost you to build one privately.