Some sleeves can be pulled out but have a high risk of the block being warped where the sleeve fits and requires oversize O.D. sleeves. Most sleeves have to be bore out, then resized with a boring bar for correct interference fit, then the block heated to 450 degrees, then the new sleeves are dropped in, lined up on the ports and allowed to cool with clamps on top of the sleeve, then the sleeve is bored to size, top of sleeve height set, then match up any ports as needed, then finish hone to desired piston clearance.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD