That is not going to be easy I will start with the fender flares. I will smooth it out, and try too keep the original design of the model.
put it back into wip because you need work on the jbeam structure and headlights and taillights but overall good job
https://www.beamng.com/threads/etk-sx-r.29286/page-2 ... This is the best I could find. Seems unfinished and it's labelled as cancelled, but if you go through the discussion, there are pictures and Ky released updates, so maybe the most recent one will be sorta finished? I think the picture that was uploaded here was someone else's idea of it, I don't know if the actual mod looks anything like it. Remember, thread bumping is frowned upon in this community, so try to avoid it whenever possible. Next time you can try DMing the person to got that picture or reverse image search it on Google. (Which is what I did) Hope this helps! Update: The mod is actually pretty stable. It has no interior and funky crash physics, but the exterior looks pretty good and definitely gives you Porsche vibes