gapping the spark plugs on 1990 Infiniti Q45

what should the plugs be gapped at

Asked by for the 1990 Infiniti Q45
The spark plug gap should be ..039" to .043" of a inch. The Iridium or double Platinum plugs come pre set.
I like the Q45 but have seen random misfire caused by bad ignition coils, bad injectors, and or bad ECU (computer). I hope your car has no problems and you are just performing maintenance.