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No the caps are going to be way out of spec after 50 years, the attraction I assume is the circuit topology, I have never heard an 8b but I had the matching pre-amp 7c for about a week before I sold and it sounded quite nice.
I would like to know what caps were used for the recapping. Russian PIOs would be ideal in place of the original Good-All caps. The 1996 VAC reissue types are a good choice as well.
The original caps were Epoxy dipped Mylars, so they last longer than wax or plastic molded paper caps. The epoxy effectively keeps the moisture out, the main culprit for capacitor breakdown.
I also noticed the upper RCA jacks were changed to those oversized audiophile "Tiffany" types. It may have other mods inside....