thank you very much for your welcome
because all the speedo support is monobloc by welding, I modified the support according the picture below, drill the 6 welding point and grinding the 2 welds on the top to keep the rev counter and the water gauge:

I take out the standard counter because in France we didn't use the mph and the kmh write in blue are unreadable during riding :smt013

the new digital counter I use is a VR2 from
VEYPOR, with a lot of possibilities, ie: Gear Indicator, Lap Timer, Shift Light, Data logging drag force, dyno curves, etc...
For the moment I didn't study all the possibilities but the VR2 from VEYPOR it's a very good product, and cheap (due to the gap between euros and dollars

)
Vince