It sounds like the rumoured GT3 RS 4.0-litre will be the homologation road-car for the 2011 Porsche 911 GT3 RSR, just announced by Porsche...
Technical description Porsche GT3 RSR (2011 model year)
Engine
Water-cooled six-cylinder boxer engine
Displacement: 3,996 cc
Stroke: 80.4 mm
Bore: 102.7 mm
Power: 455 hp (335 kW) at 7,800 rpm
Max Torque: 450 Nm
Air restrictors: 2 x 28.6 mm
Max Revs: 9,400 rpm
Four valve technology
Dry sump lubrication
Individual throttle butterflies
Fuel injection
Transmission
Porsche six-speed gearbox with sequential jaw-type shift; oil/water heat exchanger, single-mass flywheel; hydraulic disengagement lever; three-plate carbon-fibre clutch; rear wheel drive; limited slip differential 45/65 percent.
Body
Monocoque body (basis GT3 RS) of hot-galvanised steel; aerodynamically optimised front end with front spoiler; aerodynamically optimised front underfloor; adjustable rear wing; 90-litre FT3 safety fuel tank with fast filling function; air jack; welded-in safety cage; race seat (driver’s side only) with flame retardant upholstery; six-point seat belt adapted for use of the HANS Head and Neck Support; electric fire extinguishing system.
Suspension
Front axle: McPherson spring strut axle; Sachs four-way gas pressure dampers; double coil springs (main and auxiliary); front axle arms adjustable for camber; adjustable sword-type anti-roll bar; power steering.
Rear: Multi-arm axle with rigidly mounted axle sub-frame; Sachs four-way gas pressure dampers; double coil springs (main and auxiliary); rear axle tie-bar reinforced and infinitely adjustable; adjustable sword-type anti-roll bar. Complete suspension infinitely adjustable (height, camber, track).
Brake system
Brake system with balance bar control.
Front: Single-piece six-piston aluminium fixed callipers; inner vented, 380 mm diameter; racing brake pads.
Rear: Single-piece four-piston aluminium fixed callipers; inner vented, 355 mm diameter; racing brake pads.
Wheels
Front: Three-piece BBS light-alloy wheels (12J x 18 ET 34); central bolt.
Rear: Three-piece BBS light-alloy wheels (13J x 18 ET 12.5); central bolt.
Electrical system
Motec display with integrated data recording; multi-function display with integrated gearshift indicator; adjustable traction control; battery: 12 volt, 80 Ah, 140 Ah alternator.
Weight: 1,220 kg
2011-Porsche-911-GT3-RSR_Rennteam-link