Sounds to me that your going after the bolts that hold the seat to the rails,Take note that the four bolts are bolted to the floor of the car,look at the floor area ,sit in the seat ,pull the seat adjuster bar #1 and move all the way forward ,repeat this step for the second SAB ,IF THE SLIDE IS STUCK YOULL NEED TO LUBE AND GET MOVEMENT OUT OF THE SEAT FOR PROPER REMOVAL .Then look for the 2 bolts for the rear rail ,they sit down in the rail bar,10mm ,repeat this step for the frt bolts , then the seat belt rod is next ,very simply , pick the seat up and slightly move forward to the steering wheel ,it comes out of that sliding glide after about one foot of movement forward.These are part of the cars safety features in the seat design.You can reintroduce the bar into the slide when installing the new seat .Easypeasey.