The final piece of deception - my Edoardo Bianchi engine number plaque has arrived and will be sited on the original Virago eng.# pad secured with blind brass rivets.
Now I have the replacement cam chain tensioner and spring the the P.O. removed [ ?? ] the engine can be jet washed and prepped for the H-D wrinkle black paint ...... just saving up for that [ how muckin futch !!! ]
The Amal Concentric [ 22mm ] has arrived [ one of two ] and I found a brand new Triumph Trophy twin carb stub that I can mod onto another copper [ plumbing ] bend to make up the manifold fitting for the Virago "Y" intake.
I'll use my favourite JB Bond resin putty to attach the copper bend to the Trophy intake stub.
The Concentric is much simpler to set up than the SU and parts [ jets, slides, needles etc. ] are a quarter of the price of SU bits - plus readily available secondhand.
Because the 622 body series is not as popular [ or expensive ] as the 900 series they are much cheaper - I just bought two complete and in good condition for £40.