This could be an interesting thread - There have been some intriguing 131 versions conceived and built by individuals over the years. Not least tuning16's car from Turkey!
Here a few that I have sourced from the www. Please feel free to add your own extreme 131s!!!?

Apparently this a V8 version from Germany

And this is a series 3 Turbo version from the states.

Does anyone have pictures of the 131 pickup that Fiat produced. I cant remember it's name. I think that they made a commercial version of the Panaroma called the Marengo!