Well dang AL, you changed the rules half way through! Also, if the modded carb will flow 750cfm rather than the stock 650 then that is the flow rate to use in calculations. As far as TR goes I'd have to say that you'll probably have all that you can use with your combo.
But if you are that big of a fan of torque then you shoulda' gone with a BB!
Sorry, couldn't help it man! O'course I could be a little biased...................