Squirt hole or no squirt hole?

As a sidebar, the performance manuals and articles recommend swapping the pistons side to side for more performance. Do you swap the whole assembly or just swap the pistons on the rods for the offset?
You swap them side to side. It unloads the piston skirt from the cyl wall, which was only done to make them quiet from the factory.
All you have to do is..
Make sure the thrust sides are facing each other. The rod bearing is offest to one side to clear the fillet on each side of the journal...otherwise the bearing ride partial off the journal and over the fillet.
I did it, according to smokey yunicks book years ago. Squirt holes smcholes, just make sure the thrusts face each other and its fine.