opinions welcome on build.

YR my 2 cents
depend on how close you can keep the short stroke smaller motor to its peak HP curve the more gears the better
both motors can make the same top hp but the short stroke motor will typically have a narrower power band and the larger longer stroke motor a wider power band making it easier to keep it in the power band
short stroke motor can have a longer rod and less friction and less side thrust on the cylinder walls
longer stroke motor can have a longer lever arm (crank) and more leverage
we ran 304 with strokes from 2 5/8 -and just under 3", { 3.25 (forged 327 crank 3.28 3.44 (stock AMC 304) test mules prior to using 4.060 360 blocks and 4.165 401 blocks and the out the back door 4.25- 4.315 blocks)
AMC has same bore centers and 455 Buick
The bigger bores/ shorter strokes made more power and cylinder heads were modified along the way so no direct comparison
so Big Bore
More Cubes
what's not to like
now on the street I'd take more cubes if cost effective package that has off the shelf parts