I'm not totally sure, but I think the rounded radiator shell was correct on some of the '39 Petes. I got to see the Company owned '39 a few years back and iirc it had that radiator. Possibly a Fageol holdover part.
I also remember the '38 Fageol that Tidewater barge lines restored when it was sitting at the Continental Grain elevator in Pasco. It did have that same radiator. That is one sharp looking truck now.