I think you are going to find that the 37 fenders are smaller than the 39.
Not to mention headlight placement grille ,opening , ect.
You might be better off looking for a full front clip as well. Or if you don't care about it being all Olds look at some other GM options. Possibly a Buick front fender.
Even back then I believe that Buick and Oldsmobile were used some of the same sheet metal.
Torchie.