Engine    
331 cu in (5.4 L) Hemi V8
354 cu in (5.8 L) Hemi V8

Transmission    
2-speed PowerFlite automatic
3-speed TorqueFlite A488 automatic

Dimensions
Wheelbase    
1955:130.0 in (3,302 mm)
1956:133.0 in (3,378 mm)
Length    
1955: 223.0 in (5,664 mm)
1956: 229.6 in (5,832 mm)
Width    
1955: 79.1 in (2,009 mm)
1956: 78.8 in (2,002 mm)
Height    
1955: 61.2 in (1,554 mm)
1956: 61.5 in (1,562 mm)
Curb weight    
4,700–4,900 lb (2,100–2,200 kg)

Imperial on Wikipedia

MORE SPECS WILL BE HERE SOON