I'm going to rebuild my 1982 1600NA diesel engine which has, I guess, about 175K-200K on it. I haven't torn it down yet to measure anything, but as a guesstimate, what size main and rod bearing should I expect to need? Mains: .25mm? Oversized? Rods: .5mm? Oversized? Any tips, ideas, or experiences would be appreciated. Bill Longyard