Rarity (and desirability) of a slant six/ factory 4 speed?

All 64 and 65 MOPARs used Hurst shifters. They are my favorites. Nice short throws, when in good shape, and a bolt on handle.
Lucky dog. My 66 has a round handled Hurst but was retrofitted. Original Inland shifters were sloppy and often replaced. Brewer Performance has a adapter to bolt a Inland stick to a Hurst shifter. Obviously the reverse lockout doesn't work with the conversion.