if you don't change the stroke u don't change the capacity, your just increasing the compression.
remember, its swept volume. bore x stroke.
so when you minused 5 mm because you were decking the block 5mm, why did you do it? the stroke never changed...
have you considered 1g rods? they work in 4ks with 1g pistons, and i think 4k pistons, i did a thread on it, have a look, dunno what the pin to crown of piston height difference is on a 4a piston, but it may come close, and give you bullet proof rods that fit the crank properly :yes: