Amend all earlier posts in this referring to the straight axle as an A-100.
I found out today it's from an econoline van and not an A-100.
I still can't figure out why everyone was narrowing the I beam axles to make them work.
The two are very similar and there is no reason to narrow them...
Outside of drum flange on the Ford axle is 62" wide with a center line spring perch dimension of 35 5/8".
The same dimension on the A100 axle is 63 1/4" with a center line spring dimension of 35 3/4".
I managed to get all of the layout for the drivers side fender done last evening also. I'm not going to cut anything there yet until I see if I can find another inner fender support local as the bottom of it is much worse than the passenger side was.