How close to the bottom of the sump is the pick-up?
If it's the usual 1/4" or so, if it were me- and I was using a deep sump pan to reduce windage of the oil and not to protect against oil starvation due to loss or leakage- I would run 5 qts. in the pan (filter full) and call it good. Mark the stick at that level.
If you want to run all the oil that you can possibly fit, keep the oil level w/engine off for =/> 1/2 hour just below the windage tray. I wouldn't go over the tray unless this was needed in order to fit at least 4 qts.
I would add that IMO there's no advantage in running a deep sump pan full of oil. It extends oil change intervals, and takes longer to warm up to operating temp. Otherwise it would be the same as running a stock pan.
EDIT- Sorry pepi, I was typing when you posted.
Last edited by cobalt327; 04-08-2009 at 06:51 AM.