For the aluminium extruded trims fitted to 750 series and interim or transition 750/101 series Sprints, but not the 750 series lightweight Sprint Veloces. The AR Parts Books shows a quantity of 8x being required per car. This cannot be correct if each wing trim has 2x clips, and each door trim has 4x clips, making a total of 8x PER SIDE. So a sensible assumption would be that either there are a total of 16x clips per car, or that there are different clips for the wing mounted trims. 
 
Part Name: Sprint 750 Series Horizontal Aluminium Trim Strips, Wings & Doors
Alfastop Product Code: 1CWF227
Original Alfa Romeo Part No: 1493.88.039
Model: Giulietta 750 & 101
Quantity Per Car: 8