SPADA is the UK version of the 1000 SP (left  side driving).

 

The NT version was changed in some details over the original.

Bended spockets in stead of straight (cast alloy wheels),

improved finish & fairing parts, improved seat, improved kneepads fairing behind the cylinderheads, new colors metallic green and iceblue metallic, new style & more bulbous lafranconi silencers with thicker plating, better positioning of the footrests for both rider and passenger.

This description is from the book; Moto Guzzi Twins Restoration by Mick Walker.