I have sleeved all the cylinders in some engines to salvage a block that had a lot of race prep work done, or to preserve an original casting number or manufacture date. Usually, the quality of metal in the sleeve is better than the original block alloy. As long as a sleeve is installed correctly there's no problem at all with doing it. Be sure they use a sleeve with a 1/8" wall thickness, as the area behind the hole will provide no support. If I'm sleeving to correct a worn or scored cylinder without any cracks or fractures, a 3/32" wall is plenty.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!