And you're absolutely right to tease me, it's well deserved!
To be totally transparent, I continued my research yesterday and I wrote a nonsense in my previous message.
According to Paul Balmer's book devoted to the SG, Tony's first SG, called "Monkey", fitted w/ a Gibson P90 in bridge position and a custom wound John Birch Simplux in the neck position.
The JayDee Custom w/ JayDee special bridge and John Birch style Magnum X in John Birch casing, was born in 1975.
Does anyone know more about the P90s that fitted the SG "Monkey"?
I also think that a P90 typed '60 is needed but it is also necessary that it has a sufficient output level both neck and bridge.
Thank You All & Love From France