I can't remember the correct number of torsion bar plates in the front, but it's made up of something like 6 or 8 of them in a particular lay-up configuration to fit into the keeper in the center of the tube as well as into the notched tube in the trailing arms going to the wheel hubs. It's an all-morning deal to check them, since you have to remove the shock, then remove the trailing arms and then count the number of flat bars you see, both top and bottom, and then decide what to do next. You can check them by pulling the trailing arms off of just one side, but if you want to add torsion bars (if some are missing, now) you'll have to pull the other side as well.
If it's a ball joint front end, this is best done by popping apart ONE ball joint so then the trailing arms are independent. Then, with the trailing arm neutral (no pressure on it) loosen the locknut and then remove the grub screw on the trailing arm (you can keep the locknut right on it) and then jiggle the trailing arm off of the torsion bar to see what you've got.