How can i make 700 horse from a 410 stroker

I know you have a 340 block but for that kind of power, why not just swap in a Hellcat engine and call it done? Cost is likely to be the same and the Hellcat can easily break 1000 with minor upgrades.

And the Hellcat block shares a bellhousing pattern with the LAs so the only thing to change out would be the motor mounts.