yeah, dont anyone take the reaction time thing as an insult. alot of people dont understand that, until the second beam is tripped, the clock doesnt start. you could sit there, file your nails, and still run a 16.3 @ 82 mph.
demon is right about that altitude correction. colorado has some thin air! bring that car to texas and ill bet you would knock of some low 15s.
if you want to knock off some lower 60's, get some drag radials. nitto 555DRs are some sticky shoes! with practice, the 60' will drop below 2.0.