does anyone happen to know the size of the torx bit that needs to be used to take the seat belt off at the top point?

I'm putting the OEM speakers back in because I'm getting ready to sell the car and it requires me to take off nearly all the damn interior trim pieces to get to the rear deck. I forgot which size the torx bit was. It's a big one and I remember I had to buy it because we didn't have one and I can't find it now because the garage is a mess.

 

It is a T-50.

 

its actually a T47

 

That's weird I used a T50 on mine.