Help identify this u-bolt

[Scott H in Wheaton]

I have a homemade trailer that has these u-bolts attaching the axle to the springs.
Any idea how I can find 3-4 more?
It appears to be 2 5/8" wide and 3 1/2" tall. The spring is 2".

 

[JSeery]

Similar to some Ford spring u-bolts.

 

[Scott H in Wheaton]

Similar to some Ford spring u-bolts.

Agreed, but which one?
The axle appears to be early Ford front end, with the tie rod ends welded to a straight bar to prevent the spindles from moving.

 

[JSeery]

37-41 looks close.

 

[Scott H in Wheaton]

37-41 looks close.

Okay, those drawings help TREMENDOUSLY
I was measuring center to center
Inside edge to inside edge is more like 2.12 as Ford measures