Well, I don't know it all. Finally got a nice tank from ebay, good price, salvagable with only minor work needed. BUT, it has two bolted mounts and a curl fitting inside the tank.
The bottom of the white tank is what I was looking for. This tank has four mounts. It fits the 1965 CA95 and the CA160 perfect.
The black tank has the exactly the same as the white with the exception of the forward curl fitting and small indentations that allow it to fit the frame.
I have the option of letting it go and to keep looking or retrofit mounts salvaged from the last tank that was unusable.
I dont want to ruin a rare tank in good condition for 45-50 years old. It is a Benly tank for sure, maybe an early CA95? If no info can be found then it will be retro fitted on the "build from scratch" CA95