Coolant leaking into 318 cylinder 8

Like I said, I agree with a new block. Your block wasn’t a good block to start with.

To that end, if that shop can’t set a sleeve without moving other bores around find a new shop.

A sleeve is so simple that to make a big deal out of it it’s nuts.

Stop coupon clipping and find a real shop with with actual machinist.
There is absolutely no point in sleeving an LA 318 block. They are still plentiful... they made millions of them. People on here give them away free from time to time.