CQS Classics:
http://www.cqsclassics.com/
At CQS classics we are specialized in building tailor made Citroën 2CV's and Méhari's. Using our configurator it is possible to compose your desired Citroën. CONFIGURATOR: http://2cvmehariconfigurator.com/
If you want to tackle a project like this yourself, it is possible to order every required part from out friends at CITROPARTS: https://www.citroparts.com/