While not an EFII coil pack,I also wanted my coils mounted up high on the centre brace.
I made my own bracket,write up here,
I used the 4 x adel clamps, two at each end . I also added a centre brace to the diagonal cross brace using a 30 mm stand off. This centre brace stopped any fore/aft rocking moment. So you end up with a solid mount that is not touching the engine mount.
For SDS CPI users, I converted my design to CAD and Ross now sells these via his web site when you order through him,