I cant get the seat belts out of my el camino ive tried every thing i know to do

Do you mean the star bolts holding the belts to the floor (or whatever they are called) will not loosen?

I had that problem with my Camaro with the rear outboard belts. The bolts were incredibly tight, but I kept on going anyway figuring that I would have to replace the fasteners for sure.

I'm talking a breaker bar PLUS a pipe over the handle. The bolts were so tight that I figured they would be destroyed at any moment, and they remained that tight all the way to the last thread. At one point I tried an air impact, and even that would stall. It took a good 3 hours of serious muscle effort to get those two bolts out. Each bolt was hot to the touch when I finally got it out.

Amazingly enough, when the bolts finally came out, there was no damage to the threads of either the bolt or the insert in the floor.

I figure the inserts must be pinched at the factory to make sure that the bolts never loosen.

Yeh, those are torqued really hard. Same experience with later models, on the '72 they came off easily. Get a torx the right size that fits on the end of a 1/2" drive, and use the longest non-ratchet wrench you have with a 2" or longer pipe around it.