Someone on this forum (several months ago) built their own.
They bought brass hose fittings, ground/sanded them down using a drill to rotate them (I think) and cut threads on them. I love the innovation on this forum
I'm not sure what keywords to use but I'm thinking the posting is still floating around.
Not sure if fittings come with new gauges but others on this forum have made their own gauge sets in which case making your own fittings might make sense.
