New York speeding ticket accused of 74 in a 55. Wasn't going 74 was going 65 what are my options at trial?

I recieved a speeding ticket claiming I was traveling 74 mph in a 55. I was traveling 65 actually and I think he stopped the wrong person. I been interstate traveler from Pa to New york a long time and know generally their pull over threshold is 70 mph in a 55 zone and 80 in a 65 zone for staties on the high way.. So if I was clocked correctly he wouldnt of plled me over in the girst place. What would be my trial options I am sure this isnt an original defense but its the truth from my vantage point. Do I offer a plea for failure to obey a device or for 65 mph any suggestions welcomed