You get it replated if it's even bad, you do not want iron sleeves, they wear out faster, it holds heat, it has more friction, nic plating is a lot harder, less friction, lasts , and your rings last longer, you will free up a few hp just having plated cyl, from less friction. When guys on here are trying to guid you the rite way, listen especially when you obviously don't have a clue, the driveline cyl are going to save you in the long run, far better cyl,