I think that's a 51. It doesn't have the 2 small openings at the bottom edge of the hood like the 50 had, according to images I see.
I was wondering why the front was so pronounced and I finally realized that the bumper had been removed. Compared to having the bumper, it makes it look like a custom build front end.
My dad had 2 different Studebakers, both V8's and 4-doors and a neighbor had a V8. I remember at least one of dad's had Hill Holder brakes. Stop on a hill, put on the foot brake and it would hold the car even with the clutch depressed. It released automatically as the clutch was released. Even though they were heavy cars, they were right up there with GM and Ford when it came to power.