WAY TO GO JOE!!!
This should last you a long time (err......... forever, hopefully)...unless you drive your VX in EXtreme conditions. i.e. towing, racing, or overheat your transmission fluid(as indicated by the warning indicator light on the dash) you shouldn't have to do this again. EVER!
Hope you r&r'ed with synthetic atf. More expensive but a good idea....
BTW even Isuzu does not recommend changing the atf if the transmission is asymtomatic.
Also, suggest you throw a piece of flat cardboard or newspaper underneath the car at night for awhile to check for transmission leaks over the next few days. It's not uncommon to see some people over torque these pan bolts and "pinch" the pan gasket and it will leak, ever so slightly, around one of the pan bolts. Visually, check it over the next few weeks. There is "0" tolerance for leaks on this tranny. If a leak is detected around the pans, just replace the pan gasket....it should be installed, "dry" (no gooey stuff!) also make sure there are no remnant's of the old gasket on the case or the pan. When or if you do replace it in the future.
John