Here is my finished unit. I went with a $10 HEI just to see if this works. I may step up to a better HEI module later. Not counting the Autozone failed ECM, I am into this for less than $15. Used 4 pieces of 14 gauge wire, 4 crimp spade ends, a smeer of Heat Sink paste, 1 each 1 inch 8X32 screw, a shot of Rustoluim 2X paint and the the HEI module.
On the fake Transistor cap I had to re-tap the one screw hole for the HEI module's through bolt, the two original screws were metric and I reused only 1. When retapping, only go in far enough for the new screw to be tight. I ran the tap down all the way and had to peen the back side threads a bit
Same thing I did but I did drill a hole for the second mounting screw for the gm module. The module gets grounded thru those screws. I just ground down the screw and used some black paint to hide the screw from the front.
