It depends more on the block than the shop. Anyone can bore it and get lucky, and the Mexican block is presumed to be more consistently cast and have thick cylinder liners, but I would not do any re-bore over the usual until the shop did a "sonic check" of every cylinder.
Don't remember what it costs these days. Just had it done, but forgot the itemized cost, but it's not too much to add to the cost of a rebuild vs getting a block with too-thin cylinder walls.
That said, and just "generally speaking" the 302's were not considered to be the problem the 351's were. Many shops won't do a 60-over on a 351W that would not have any question of doing the same thing to a 302.
Still, even with a 302 it's cheap insurance to sonic check to make sure.
A friend ran a 60-over 302 for awhile with no real trouble that he didn't cause himself. But it did run hot after the rebuild. Not super hot, and it ran for years. But it always ran "warmer" than prior to the rebuild. Could have been a number of factors, but the fact that it was overbored at least has to be considered.
Good luck either way you go.
Paul
