16.210 is a good time for light mods, but what exactly do you have done?

You posted that for your best run you took all the stuff out that wasn't doing you any good in a drag race (which always helps) you took your exhaust silencer off (do you mean you removed your muffler?) put in new plugs (that probably didn't make a difference unles your old ones were worn) and you got a good launch.

A 2.4 60' time is MUCH better than a 2.6 and that alone was probably most of your improvement. That's why the driver is the most important variable in a drag race.