How can i make 700 horse from a 410 stroker

I have a good foundation lol and to the other guy that said it won't last long I strongly disagree. I have a 450 horse engine now I've been running for 13 years....Cast crank to boot. I also have available to me large port commando heads with w2 offset rockers(pushrod holes are moved over on these heads) and a .640 mopar roller cam

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I’m only slightly surprised that you have good parts and that you purposely held back what you have. You left it to a guessing game of varied answers and suggestions.

Why would you turn this into a game?

What’s the deal with those heads as cast and do you know anyone that has experience in porting them? I personally don’t know how far they can go but below is a good idea on a cylinder head to use for a NA engine, if you doing this as an NA engine.

W8 or W9 heads would simplify it.
Those or the Victors.
He probably needs to make over 1.42 lbs-ft per cid to make 700 hp under 7000 rpm, 1.25 lbs-ft per cid would be 8000 rpm.

Hp x 5252 / tq = rpm, Displacement x lbs-ft per cid x .9 = torque at peak hp.

Torque generally around 90% of peak torque at peak hp why the .9

So 512-582 lbs-ft puts 700 hp between 7000-8000 rpm.
For what size engine is this calculation for?