Rear Cargo Kit 3/4/5 cm for CNG/LPG systems Panda 4x4 first series

REAR Cargo kit for natural gas/LPG systems 
For Panda 4x4 first series from 1980 to 2003 
 
This kit contains: 
Reinforced rear shock absorbers + 
Rear springs to choose between: 
 +3 cm 
 +4 cm 
 +5 cm