1981 Toyoda VMC Help

Good Day Machinist,
Does anybody out there know about my Toyoda machine. the company I work for got this machine at an action and works absolutely brilliantly but we have no Software, and the only books we have are not for this machine. Also I am in need of a Toyoda BIG touch tool probe for a BT50 spindle, I have seen them on the internet for a CAT50 but I don’t know if I could modify it to suit BT50. All tools, software and books were lost by the previous owner.
The machine info is : FVN-50A
1981-5
Fanuc system 6M

Thank you all.