Wheels, Spindles, backing plates

Will the Ford 37 thru 48 spindles for my dropped axle fit the 53 thru 56 Ford pickup backing plates and brake drums? Also are the wheels from the same pickup 15 inch? My Junkyard source say they fit, but before driving the 150 miles for them I just want to make sure.
Tom

37 to 41 will fit with slight amount of grinding if I remember correctly. Don't know about 42 to 48.