Andy,
Any good machinie shop should be able to sleeve your motor and it should be as good as new. I think I would have them go to a .030 sleeve though as the .030 and .060 are more standard over bores and pistons are easier to get for them. I know several people who are running big blocks and small blocks that had to be bored way out to clean them up and then sleeved and they have never had a problem. Just takes a good machine shop that will do it correctly.
Ron
