Hi i think what you are searching for is this. good luck with your twingo :)
https://www.ebay.co.uk/itm/Renault-Twingo-II-RS-Cup-Rear-Roof-Spoiler-Alettone-PRIMED-PREPARED-/262162161180
I know about the turbo on the Twingo gt. But i want some information on pistons and conrods and etc. Im wondering because im planing a turbo build on my twingo with the d4f772 is it even possible or am i totally wrong. Im looking forward to hear you people who know more then me on this subject...