I think some one answered part of my question... cut the spring perches off the rear and weld at 3/4 inch inward.
The originals had 4 studs. Getting an end wrench in above the spring eye wasn't required. Maybe the eyes center moved rearward provides a little more wiggle room.
I need the 1 inch rearward axle position now. I may need the 3/4 offset later on. I know I'll never need more backspace at the rear than I can run on the front.
That leads to another question.... How much backspace can fit on the front ?