NO! you don't want it overfilled. If it were me, I'd drain some off. I keep a 3ft section of clear tubing handy. Just, excuse the phrase, suck some out. dump it into an empty oil bottle and continue till you get 16oz in it. Tighten everything up and fire it up to temp. Depending on mods, you should be over 230 when runnin it hard. After I opened my in/out air, my temp stays around 224. today it hit 230 after running 100 mph for 10 miles, peaked to 120+ couple times.
Be careful in trusting these digital dipsticks, I used an laser heat gun and shoot the oil to verify if dipstk is spot on. Have returned several of these to get a good'n.
The oil capacity from MOCO is from a dry motor, when you drain the oil, there is some residual that stays, FEAR NOT, its cool. I put 1/2 qt less when adding, also OK. then run it up to temp and check, you can always add a little.
My last suggestion, STOP letting HD monkeys change your oil, DO IT YOURSELF. only way to insure it's correct.
Buy GOOD synthetic oil. I recommend Amsoil 20/50 in motor and primary. And RED LINE in tranny.
This is very easy once you do it. Buy a service manual, keep it in Bathroom. In two weeks you'll know more than the monkeys, and staying on this forum will help also. But................be prepared, you have been warned
Hope this helps
