I have the m40 with 4 jammers, 1 in the rear 3 in the front.
You can see 2 of them and the 3rd is hidden behind the plastic frame around the plate. The best place for them is next to the running lights, as they are the most reflective part of the Nsx.
My Head lights pop up so there is no need for them to be located right next to them.
Ah, I didn't see the one around the license plate. Should be very effective in that case. How many saves has it netted you? I know my system has netted me 2 saves already. Laser use appears to be on the increase around here in DC.