Hi Henrik
so I am aware of WRITECODE (have never used it) but the endurance on the original part 16F15376 will not suffice

on the 16F1937 which has DataEE HEF and will drop on the same footprint my question is whether PBP WRITE will just work with the same as with standard endurance

16F19176 has DataEE but is not HEF and interestingly on the Microchip selector for the 1937 they say "Consider 16F19176" I guess because it is newer and more capable.