Installing boost gauge

[Meanwhile]

I pulled threaded plug from my intake and had the threads checked to see what size they were, I believe it was 14mm 1.5 taper. Nobody in my area had anything to reduce that down to the 1/8 so I hit up Google. Auto Meter makes a one piece fitting in that size which I ordered from Summit for about $20. Another suggestion I got from someone was to get a bolt that thread size and find someone with pipe taps that small. Drill and tap the bolt.