8 3/4 or Dana 60

Ok got a question here you guys. My motor makes ~400 HP with an auto behind it. The question is should I run my 8 3/4 or try and get my hands on a Dana 60 (it would have 354 gears with a suregrip)? If I go Dana I'll have no need for the 8 3/4 so I'd sell the thing (all parts I have for it, 741 w/323, 489 w/323 (open but comes with clutch type sure grip), and 489 w/391 clutch type sure grip. Come with sbp axles). So what would this factory a body axle setup be worth?