This site describes the process of converting my Citroën ID20 Berline into a convertible version with a fabric hood. The car was in very bad shape when I bought it, back in November of 2007. Since then, we have been restoring it to a state in which it can be driven.
After the general restoring was done, the idea developed of converting the car into a convertible. (Next picture: The endresult, September 2018)
The conversion to convertible, including making it all legal was done in 2015/2016 by an experienced licensed chassis-builder, Oord DS Cabrio, in Heerenveen, the Netherlands. ( The underneath picture shows the car upon delivery at Oord DS cabrio beginning of 2016, before I took it home for a complete makeover of the top cover and boot lid )Although Oord did provide a fabric roof to the car at delivery, I decided to put a more practical , in my view better matching to the car, fabric hood in. So, after the basics of the conversion was done, I took the car home and built my version of a collapsible roof and fabric hood into the car. (The uderneath picture shows the Audi80 hood frame and hood placed in the car, and the newly developed flattened boot lid )