I know you've been asked this question quite a bit but there's always that uneasiness when our cars all have diff sizes and profiles.
I have a 2005 Pontiac GTO, black, summer car. It's extensively modified and pushing 700hp @ the flywheel. What that means is I like to speed, and when I speed, it's usually gone plaid. No worries though, I'm only endangering myself (no crowded areas).
Located in Dayton, OH and we love our lidar here.
Pic of front of car w/ required front plate (except mines in black):
Mine does have a front plate
Pic of back of car:
I was leaning towards the Quad.
Front of Car: 2 units, each one at further most corner, top most horizontal slat. As close as possible to the headlights.
Possible issue: plate in center
Rear of Car: 2 units, each at the upper & furthermost corner inside the recessed plate area.
Other Possible: 3 in front, 1 in rear.