Compression test results

Those are the plugs I ran in my nitrous motor. My car runs better n/a on a 5 or 6 extended plug. Also running that rich will trash rings. Ask me how I know.
So the part number for the extended tip plug is either 4096 or 4095 . . . .come to think of it previous owner said "nitrous was supposed to go on the car" but he didn't want to run it