Gear Ratio and RPM deciding on gears

Cool! Is this with a 3 speed? I was running 3.55s and 28" tire on my dart sport 360 and seemed a little wound up on the interstate. Also was a little tough keeping up with the other cars! Now have 3.91's (which I haven't run yet.) Just curious.
yup 3 speed auto 904A when you say wound up I assume you mean too high revving right? Do you recall any speed/RPM's?