go with some ARIAS. I would JE over wiseco, plus no one I've talk to during my last build recomend them, GE told me that they are inconsistant , as is in they are all diffent size that why they have the wieght marked on each one, they said when they bore the blocks have to use each piston per cylinder, they canno just use one.
IIRC mine were .0002" from smallest to largest pistons, which realisticly is a small variance. It might not be the exact number, but I know it ended up negligable. One thing to note is the coating can screw up measurements. The bulk of it wears off on break-in, taking .0003" off the pistons. You can wipe the extra coating off with a firm finger smudge, leaving just the impregnated coating. I daily drive mine, and I don't get any loud piston slap. I also have a cutout+stock muffler, so I'd hear it if present.
FYI The stock off-the-shelf Wisecos are lighter than CP's, and the wrist pin is actually the same thickness. They are also cheaper, wonder why... The custom pistons from Wiseco are very different, to quote a friend "bomb proof". Wiseco's been making pistons since forever and they've had the best skirt taper based on 3 articles I've seen since the 80's.
BTW anyone recall the slew of melting CP pistons from 2-3 years back? Then they miraculously came out with a new design and those problems [which they never admitted to] went away?