| General data | |
| Year/s of production | 1961 (Spider California)/1971 conversion by Zagato |
| Presentation | Turin Motor Show October 1971 |
| VIN | 2491 GT |
| Number produced | 1 |
| Design | Zagato |
| Manufactured by | Zagato |
| Technical specifications | |
| Chassis | 539 – Steel tubular frame, oval cross section – 250 GT SWB Spider California chassis |
| Length | – |
| Width | – |
| Height | – |
| Wheelbase | 2400 mm |
| Front suspension | Independent wheel suspension, double delta wishbones, coil springs, Koni hydraulic telescope shock absorbers, anti-roll bar |
| Rear suspension | Rigid axle, half elliptical longitudinal leaf springs, trailing links, Koni hydraulic telescope shock absorbers |
| Front track | 1354 mm |
| Rear track | 1350 mm |
| Front tyres | 6.0 x 16 in., Borrani wheels with wired spokes and central locking – three prongs Tyres: 185 x 16 |
| Rear tyres | 6.0 x 16 in., Borrani wheels with wired spokes and central locking – three prongs Tyres: 185 x 16 |
| Front brakes | Disc brakes |
| Rear brakes | Disc brakes |
| Kerb weight | Approx. 1200 kg |
| Body material | Aluminium |
| Body type | Spider – two seats |
| Engine | |
| Type | 168 – Colombo front engine |
| Number of cylinders | V12 – 60° |
| Displacement | 2953 ccm, |
| Bore and stroke | 73 x 58,8 mm |
| Camshaft | 1 overhead per cylinder bank |
| Valves | 2 per cylinder |
| Compression ratio | 9,2:1 |
| Ignition | Single ignition |
| Lubrication | Wet sump lubrication, 9 litres oil |
| Maximum power | Approx. 285 hp – 7.000 rpm |
| Maximum torque | Approx. 255 Nm (26 mkg) – 5.500 rpm |
| Carburettor | 3 Weber twin carburettors, type 40 DCL6 |
| Gearbox | 4 gears + rev. |
| Performance | |
| Top speed | Approx. 240 km/h |