The hi rez stl file to download the cabriolet 126p model is below at the bottom of the page. There is also a multi-piece version with opening doors, running suspension and steering which can be made as a bicycle-brake cable remote controlled toy model. That one is here.
The files for the mechanical controller are on this article. You can buy both the 126p model files and controller model files from this link as a bundle with a reduced price. Thanks for your support.