Honestly, you're better off buying a block with a standard bore that will clean up with a .060" overbore, and having a quality machine shop fit each of the pistons to the bores, so they all have the correct clearances specified by the piston manufacturer.
Just buying a block that is bored to .060" over already doesn't necessarily mean that the pistons you purchased will have the correct clearances, and it could either cause piston slap (if the clearances are too loose) or could cause galling (if the clearances are too tight).
Always better to measure twice, cut once . . .
While there is some truth to this, it also depends on what is being built. These days most every piston manufacturer creates their pistons for a given bore size, such as 0.060" overbore, with the proper clearances already built into the piston design. In other words, if a block is bored to exactly 4.42", the 0.060" 460 pistons will probably measure 4.416" at the skirt. If the builder wishes for a piston-to-wall cearance for an engine application that dictates greater than standard piston-to-wall, the pre-bored 4.420" cylinders can be lightly honed to add a thou or two (or whatever) as desired. In other words, rarely will the bore be too big
for pistons manufactured for the same bore as the block and thereby deemed an unusable block.
I do agree that boring cylinders for specific pistons does still come into play for engine builds and applications where extreme precision is paramount....but remember this practice originates from days of yesteryear when the set of pistons had OD skirt measurements that were quite literally all over the place (varying by several thou in the set) and thereby needed to be applied to each and every build/cylinder. Most quality American-made pistons these days are much more exact and identical in their measurements within a given piston set, and so in milder builds the baseline clearances usually end up as the piston manufacturer specifies.
All that being said, I would absolutely agree that the OP had better measure his piston set and confirm the dimensions before
he buys a pre-bored and honed cylinder block...and also understand that there might be some additional adjustments required (ie, honing) just as there are necessary adjustments in any
brand new out-of-the-box component that is purchased.