Are you talking about the outboard nuts holding the seatback down? If so, they're really big, like 15/16 or 1-1/16" or something. But those outboard nuts are speed nuts and are not that difficult to break loose. If you don't have the big socket, they can be removed with a pair of channel locks. The seatbelt bolts that secure the center of the seatback are a bigger torx, maybe 45 or 50.

i wa tlaking about the seatbelt nuts, they are something between 11/16 and 3/4

OK, Nerv, you made me look! The outer nuts are 1". The inner nuts on the belts are 18mm. The 18mm socket fits tightly. Usually you can go 11/16" for 18mm, but maybe not on these.

The FRONT belt mounts (not the rear ) are torx 50 bolts. (Iknew there were torx heads in there somewhere!)

dammit, i had a feeling it was 18mm, and wouldnt you know it, 18 is the only size i dont have, my regular sockets go up to 17, and my large sockets start at 19

Yeah, 18mm is used a lot on the suspension parts, ball joint nuts, bell housing bolts for the tranny, torque converter and some other places. I think the problem is that those belt nuts are "stop" nuts of the pressed type. The nut is crushed out of shape a bit to make it stay on the bolt. Otherwise, your 11/16" socket would probably work. They usually come off pretty hard, too. It'* better if you have a 1/2"-drive handle to give you a little extra leverage.