My first post here, speedo question

[Wicked V6]

I picked up a basket case TTA, I don’t even know the number yet. In few weeks it will get hauled up to my place. This car has been butchered pretty bad. The heater box was busted out for racing and in the back the floor was cut to put the fuel cell and all kind of stuff, no motor,no tranny bla,bla,bla. Any way I decided to save it. I am very familiar with Turbo Buicks so no issue there.

So my first question is; I have a BRF tranny out of a GN, what do I need to get the speedo working?


Thanks

Prasad