The build

I know a stone mason - my grandfather! Unfortunately he died about 50 years ago so not much use to you. Could you chase the letters out with a little drill and paint them with something?

Quite possibly. Unfortunately a very high chance of it looking like a 4 year old had done it   . You should have seen my new barrow sign before we handed it to the neighbour   . And that was just painting. We both had a go. We were both rubbish     . 

on a different topic. What does your new avatar picture say? I’ve zoomed in but it’s not legible.