Drew, after 1958 they used a more precice equipment to do the blocks. No more shims where used in this engines. This also alowed the use of the neopren crank seals. So it depends on the year of the engine. Check the bearings with Plastigauge. If out of specs, have the crank regrinded and use oversized bearings.
Yeah, spend your money in a good magnaflux and balance job than in align boring.
Frank
