Dipstick for deep pan 727

What is everyone using for a dipstick when they install a deeper than stock pan on their 727? Also after you pull the pan and button it back up, what's the standard capacity for a refill, 5 quarts + whatever the deep pan adds? I believe my pan is a 2 quart add. BTW I did NOT drain the converter. I know they hold a significant amount of fluid too.