I think you should also drill several holes in the bracket to allow air flow thru the empty ECU box. Keep the holes from showing once assembled and none drilled under the HEI pad. Your doing a great job. Keep the pictures coming.
DionR got it right. Going to make a bracket which the module will be mounted on. The mopar ECU casing will be mounted over and cover the HEI module.
The orange box after the late 70s early 80s has got to be the worst box ever made.
Do a search here and on slant six. Org about it and you will see all the info you need.
Your drawing is nice......
i bet there ain't no van goghs hangin in your house. Lol
Trailbeast whats the hei8 coil? Is that something I need or just stay with what you sold me a year ago or so?