I believe you're thinking about Ozgur Tan's (username Ozgur_Tan) project. Here is a link
i'm going to start manufacturing of bodyshell, but slabside or fia ?.
To find all posts about CAD files for body bucks, go to Google advanced search. Enter all the words you want to search on like 'body buck CAD' and then enter 'clubcobra.com' in the URL box. It will pull up all the posts discussing it.