I don't recall anyone here having good luck with a reman engine. Built by the cheapest labor they can find with the cheapest parts they can find.

Ask established repair shops in your area for machine shop recommendations. Count the machinist's fingers as a rough and ready guide to how careful he is. Do all the work they recommend - probably cylinder boring, and perhaps crank grinding or polishing (the latter, you hope), and perhaps a line bore of the crank saddles. NEW oil pump. They will also assemble the engine for you if you want, but at a minimum, have them install pistons on rods and rings to pistons. The rest is just torque wrench work and clearance checking with plastigauge on mains and rod bearings, and a big wad of cleanliness and careful assembley.

If you order a Clearwater, spec non-jet valve and hydraulic lash adjusters, as the stock non-jet valve head had manual lash adjusters which require regular lash resetting.