Whos running over 700whp on an 8.75?

Very late to the game here, and I haven't read a lot of this thread yet, but my philosophy is this : if you think you might need a Dana, you NEED a Dana. I would not trust a 450hp stickshift car in front of an 8 3/4, let alone 700.
Fix the 8 3/4 as a street rear, sell it to a street guy, and put the Dana in.