Fitting boost guage ready for stage 2

[Slam Wagon]

so my plan now is to drill and tap into the egr inlet blank, is this right for getting the boost pressure? here is a picture of how i will do it, so the hose goes through the bolt with a hydraulic brake barb in the end and then sealed into bolt.



does this sound a good idea? will it work? whats best to use to seal and hold it?

cheers