Will a Stock 489 handle 700hp?

First thing you need to do is get out of that where can I run down and buy one mind frame...
I watched Craigslist till what I was looking for a popped up. It was a Dana 60 heavy duty out of a Dodge truck. It had 410 gears and was in excellent condition, for $160... I kept the 410 gears and sold the axles drums brakes and open carrier for a small sum of $40 to get it out of my garage and get it into the hands of someone who can use it.. now I'm $120 into an axle end gears..
https://seattle.craigslist.org/kit/pts/d/poulsbo-dana-rear-axle/7212731488.html
^^^that's just a super quick two-minute search for the first thing I found but again I did a little bit more research and waited for the time to be right..
So add to that $120 a call to Dr Dif (Cass) for $75 Mopar 8 3/4 style housing ends, a spool to put my gears on for a $125, $50 for new carrier bearings, $300 for 35-spline axles with green bearings and 3 inch studs, I think $25 for thepads for the leaf springs to weld to the rear end, $300 to have the ends and the pads welded on professionally and $175 to have the gear setup...
Oops I lied it's $1200 and $5 LOL...
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And if you need backing plates you can just get them off of a Dakota truck with an 8 1/4. You can probably get the drums and all that stuff as well...