I'm afraid it has been discussed many times before. What I'm not sure about however, is if anyone ever had any good experience with sleaved engines. Dave S will be along shortly to tell you about his "adventure" with sleaved 7.3s.

I'm rebuilding my 6.9 right now, and all I'll do is a honing (244000 on it), but I have virtually no piston ridge. I can ask my machinist what he thinks about sleaving, maybe he can shead some light on the idea. Do you know for sure if you have cavitation? If the SCAs were maintained in the cooling system, you should be fine, unless you have to rebore it, then you are rolling the dice, since the 7.3 has such a thin cylinder wall to begin with.