My design attempts to overcome the challenges of having a solid mounting point whilst remaining compact enough to fit between the engine and subframe.
I also needed to ensure the hanger was the correct width once the differential is fitted so I measured and cut a block of wood to the same size as the diff to act as a spacer. 88mm to be exact.
Once I had determined all the spacing, I marked out the critical dimensions on a piece of cardboard to help with the metal box section cuts.
The obvious approach was having the mounts attach to the side of the bearing blocks however, the output covers are an odd shape I wanted to ensure a solid mounting. I decided to make a cardboard template of a bracket that seemed like it work. I then started contacting a few machine shops to have the brackets made but they were quoting silly prices to work form my cardboard template, so it was time to learn how to draw in CAD.
I've dabbled with Photo editing in the past and I've tried Google Sketchup so I figured I would have a go at designing my own parts. My home pc is running Fedora (Linux) so I looked around for Open Source software and settled on LibreCAD It only produces 2D drawings but fine for what I require.
I had to do a bit of dremel work on the output covers to get them to fit properly. The "ribs" on the covers needed to be re-shaped to allow the brackets to sit flat and I spaced them with washer to allow fine tuning of the position later.
Here they are test fitted to the output covers