HEI in Mopar ECU casing

I don't see a ground wire. The module MUST be grounded at the mounting bolts. These HEI modules are fairly dependable. I first discovered when I put the Toyota 20R into my (now gone) Cletrac, and run one on my 67 Dart. Didn't even use a separate heat sink. Someone had mounted a Mopar conversion with a sheet metal screw onto the firewall behind the dist, so I used on of those holes