Welcome. While i am separated from my 203/s by many miles and years i can speak for a couple of my old friends working on theirs in Northern NSW and ( being presumptuous ) on behalf of historically active forum members like Commerciale, Dano, James Gelido, Martin Kropik, Luthier and Russell Hall - and many more - who are going to be interested in what you have, exactly, and how you define project.
Amongst others, those listed have all made many posts you might find instructive.
Additionally, the 'Amoureux 203 403' mob are worth working out how to join, even with no french language skills ...
Amazing that of only 10,000 cars sold 65 years ago examples should still be turning up. Fifty years ago so many were in the wreckers yards it seemed they would soon be extinct. Now if we had some of those wreckers yards today, particularly the big one at Miners Rest that used to do up 203 commercials and put them back on the road.
i recall some 45 years ago, calling into Barry Stennets place out of Towoomba, to get some parts for my brothers 403 ,they had the crusher truck there taking away most of the 203 wrecks ,we were stunned , the guy in the yard said it was a pity, but they needed the room !
My 203 sedan had a similar cast flash on the front guard and it was a early '50 with the French over riders and bumper's
in the part metal and stainless steal type. The front seats were fully covered although the back arm rest seams difference on yours's.
The 403 steering column and 203C tail lights makes for a safer drive.