Check with your machine shop then on line honing. The block may need it anyhow, but I think you'll want to go 4 bolt, may as well go with splayed. But, it'll require line honing which may blow your machine shop budget. Speaking of which, just out of curiosity, what is your budget for this project? I found I could buy a short block already set up for about the same cost as doing it all myself with good parts, but that way I have no surprises and a warranty.