Measure the bores at the bottom of the ring travel and the piston skirts right under the oil rings about 1/4 to 1/2 inch below and then measure the skirts (all eight pistons and bores ) at the bottom and if the skirts are smaller than below the oil rings that piston is junk, don't use it
I'm thinking the pistons skirts come from the factory with the piston to cylinder wall clearances ground into them so a standard piston for the stock 4.3200 bore will have right at .0035 smaller skirts, 4.3165 , not 4.3195 or between the two
Let us know what you find and decide please