That's always my concern when making these random guesses.
I just keep looking at the cam specs, SD intake, even though worked, and modest compression. While it's got plenty of head, i just can't see it making peak torque past 4800. If the springs are up to it for 62/6300 rpm's, i'm going to go under most estimates to maybe 585 at 5900.
Don't want to be a downer, and this thing will be a mid/upper rpm torque beast, i just don't see a big peak way up high.
That said with a grain of salt, i hope you have a very successful dyno day and get close or even over your expectations.