Well keep in mind that there is no "new one" yet. The styles offered by Mopar, FHO (shown above) and others are quite different in many ways from the factory manifold, some new intakes rival the originals in performance but can also have a need for unique carb linkage, air cleaner set ups, fuel lines, hood clearance, and other none original requirements.

Rick Allison at A&A Transmissions is getting ready to release one and it's supposed to be a faithful reproduction complete with Pentastar and part#.

The casting number you posted was used for several years beginning in 1967. There are several distinguishing features cast and stamped in that can tell you rough which year it is but none of these features has anything to do with the casting number. Pics required for further info.