What ET should my Duster be running?

Following, as I am throwing a 440 in my Demon. Ill have around the same CR, stock bore, flat tops, 440 source stealth heads(no work done), 21-224-4 comp cam, stock rockers, push rods, stock ignition, TTI 1 3/4" headers, Eddy performer 440 intake, 4 speed, 3.91s, and for now 235/60/15 street tires. I know I will blow the tires off extremely bad but have to run them for now.

Cant wait to hear what you end up with!! Good luck with the tinkering!