So here's an issue:
Notice that any upward movement of the differential will send it into the flange on the ECM. I can't move the axle+differential forward to clear the flange, else the spring buckets will no longer sit directly above the beams. Same issue as earlier posts.
The solution in short is to heavily modify the ECM to eliminate that portion all together and compensate for the structural loss in the bracket. Here's a view of the bracket, from the rear, looking on the top surface that will mount to the underside of the ECM. Notice the one hole drilled... and the two faintly marked to be drilled later.
Those three holes will align with the three holes you see below from where the studs on the factory i-beam pivots used to be located. I'll reuse these holes with bolts in place of the old weld in rivets.
The whole thing will bolt, then weld up something like this. The rusted/cut-off stud that you see at the top of the previous photo is barely visible in this photo.
The ECM will be cut along the left side of the cardboard bracket, and the differential (visible in the bottom of the photo) will have a load of extra clearance, now able to swing in front of the ECM. A new flange will be welded to the cut edge of the ECM and the bracket, extending upwards, replacing the function of the cutaway portion.