Well, since you mentioned it, here are a couple.
Well made bracket I will have to use my machining skillMy T140v was an American import and came with the guage bracket there’s a company in the USA that make them but I can’t find the link for them sorry.
View attachment 56771
If you are referring to me, and the speedo and tachometer on the Triumph and BSA, they are both mounted on factory brackets which have proven to be up to the job.What are the gauge mounting brackets are they off the shelf or something you have made, they look much better than the flimsy pressed steel ones from the factory. The Bonnie is a lovely looking bike.