Nothing wrong with sleeves. As long as you have a good 1/2 to 1 inch of cylinder wall at bottom of skirt. But you want to consider it runs a couple of hundred bucks per sleeve to have them installed. So weigh it out. Nice block that needs one or two sleeves might not be a bad deal. If it needs all eight then it might be expensive. I prefer an aged block that has been stress releived over a new block. Kind of depends on how wild your going to get with the motor.