parts availability and off the shelf rings
then enough for later rebuilds
mopar bore spacing is greater than sbc but the cylinders/ deck height is almost .600 taller so you get more flex at the same wall thickness
At 4.100 you would have most like a good couple more bore jobs in it. Maybe 4.06-4.08 is a better start though I get it.
High nickel blocks, thicker decks, there pretty strong, much stronger bottom end probably than most sbc