what size torx to remove seatbelts?

Just buy the full set.....you'll need the smaller ones to take out the dash anyway :rolleyes: If you buy them, spring for the best quality ones you can afford. Cheap ones round off easily, especially when dealing with even lightly rusted in seatbelt bolts.
 
I agree with these guys, you may need heat, and spray them down with PB blaster a bunch of times before you try it.
The seat belt bolts will almost certainly break a t50 not rated for an impact gun.
I broke 2 of them, and a set of vice grips on mine.
 
The seat belt bolts will almost certainly break a t50 not rated for an impact gun. I broke 2 of them, and a set of vice grips on mine.

+1

After you break the first bit, or strip the head of the bolt out, see if you can't weld a small piece of redi-rod or flat steel plate to the the head of the bolt so you have something to grab onto with a large vice grips to twist that baby out.