they mount where the engine motor mounts would typically be. it has made perfectly clean passes just as pictured. so i cant say for certain this is the culprit. it is certainly on the very short list of possibilities. like somebody else stated to me. to get a free $600 main harness 10yrs after purchase. that screams known issues of said harness and ive heard of others with exact same issues im having. to have been corrected once harness was changed out. i am.hoping for this but i am currently looking at options of selling the car outright or engine as a whole turn key. so i can go with a g2 hemi and twins instead. just tired of the mental exhaustion over a year long. to find no solutions for this.