Hi will this fit on the unity spot light s6 that comes on p71 police cruisers ?

It fit my Unity H-1 Spot Light but it was a tight fit. I did a little Dremel grinding in a small area at the bottom near the retaining ring screw but not sure it was really necessary. Not sure, but it is a little bit thicker than std PAR36 bulbs. I used for aviation purposes. They're kinda a cross between spot and flood.