You're a little confused on the open center wheels if that's what you mean by "wide pattern". Those were used on '36-39.
Also, brakes are easily transferred between the various years, so they're not a real reliable method of I.D. If you've identified it correctly as a Ford axle here's a more reliable method.

Perch mount hole centers:
'28-36 36 3/8"
'37-41 38 1/2"
'42-48 40 5/8"