Hp/tq estimate on 5.9 magnum?

Well I have a 8 3/4 that I am eventually going to put in it with 4:10 posi and back half the frame for a 4 link. That was the plan for the actual engine I built for it, but that engine has to wait a little longer, it would be around 450-500 hp, but with this motor it will have the 8 1/4 with 3:55 posi and a set of cal-tracs traction bars and 10in slicks.