The links at the rear end are the factory traction bars that came on 67's to control the wheel hop. 67's had single leafs and needed the traction bars. In 68 they went with multi leaf springs and staggered the shocks so they didn't need the traction bars. Generally, manual transmissions got 2 bars. Other cars got one bar. If you don't use those traction bars, somebody will want them. They just unbolt from studs under the rear seat. Mine are long gone.
