If you don't know the gains, I suggest you take it to somebody who does.
Boring out a block is for the soul purpose of moving up to the next size larger pistons. We do this for several reasons, scoring in the cylinder walls, seizing the piston in the block, cylinder worn too far out of round, etc.
As for stoking it, people have stroked engines on stock bores.
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"You don't have a clue. You couldn't get a clue during the clue mating season in a field full of horny clues if you smeared your body with clue musk and did the clue mating dance."
When she get's bitchy, SPANK THAT ASS!
(#Y#)