LEGO Technic Porsche 911 GT3 RS - CertifiedThe Lego Technic Porsche 911 GT3 RS kit comes in an impressive 578 page long manual with a total of 856 steps in the instructions. It is a 1: 8 scale model of the 911. LEGO worked with Porsche to replicate the build process for an actual GT3 RS, allowing Lego builders to follow Stuttgart's actual production sequence as closely as possible. The doors open and close, as does the engine compartment and front lids.