Andy,
If you are hell bent on a strong 302 block, buy a new one from Ford Motorsport that has the 4bolt mains. If the block you are talking about is servieable, It may be worth something to a guy who is restoring a Boss 302 mustang. The sleaves give me the creaps.....why are they there? It would probably be a foolish gamble to invest you hard earned money building an eng around it. If I could get it real cheap, I would probably buy it just as a conversation piece.
My 2cents
Steven
