It may be the end of the road(river) for your boat. I had a A131 bored out and the machine shop went past the 024" overbore to .030". Found a place with pistons that big but would require different connecting rods (pin diameter difference). Price was outrageous, on the order of magnitude of a newer boat.
Then add on the cost of balancing the motor since most replacement pistons will not have the steel insert of the OE pistons.