Driver : Aroldo Louzada
Car : Maserati/Simca 2.432cc or 2.898cc
Yes, that's the car! Well solved and I admire your persistence. It was built for Louzada to race, but at this stage it had been sold to Ayres Bueno Vidal - it's pictured at Interlagos in 1964. I'm quite happy to award you the point because I made a few errors and this didn't help anyone.
According to my source, it's a Maserati chassis powered by the engine from a Simca Chambord. It was made to take part in the South American "Mecanica Nacional" races. As I said in an earlier post, the size of the car and the wheels made me think it was based on a Simca- Gordini, with body panels adapted from a Maserati 250F, but I was wrong about the Simca part of the solution.
My apologies to anyone who was misled by my answers.