I'm going to piggyback on this thread and ask a related question instead of opening a new thread if y'all don't mind.

I'm getting ready to order a block. It looks like most sleeves can go 4.500 to 4.530 max. How small a bore can a 4.500 max sleeve come with? Can I get a 4.44 bore, then go 4.470 then go 4.500? Does it make sense to do this?

For what they cost I'd like to get as much life as I can before I have to buy 8 more sleeves.