I don't have any photos currently to share but maybe I can describe what I have. Looking for some insight into my 1967 Firebird that originally came with the base inline 6 engine and a three-speed manual gearbox. Soon will have a 400.
Both rear shocks have a "line" or wire about 12 inches long just hanging off the shocks, and I seem to only have 1 leaf spring or traction bar on the car (I think on the driver side.
Looking to rebuild the rear suspension and want to make sure I gather up all the parts and missing parts.
On a positive note... I did get to drive the car around the block for the first time since 1996 this past weekend!!! Here is a link to the first drive: https://youtu.be/jUtcJBm2ILY
Sounds like your car has air shocks, a common mod back in the day but not original equipment. if you look closely the lines should be either a whitish/clear or black plastic unless over sprayed with body color. As far as the radius rod/traction bar base 6 auto cars got none and base 6 std. cars received one on the right side. Only the sprint 6 4 bbl and v-8 cars equipped with a manual transmission received them on both sides. If you end up deciding you want one on the left side it is more complicated then just bolting one up even though the bracket is already on the diff. There is a support/stiffener plate that mounts to the floor pan that used to be impossible to find back in the day but I believe is being reproduced now. By the way if you did not find the Trans. fluid low after your test drive you may be surprised and find it works again after cooling down to help you with moving it around in the yard.
The bracket also bolts into the frame rail into a rivnut. It might be tricky to install the rivnut but should be possible with the right tool. PST sells bushings for the traction bar. That’s about the only place to find them. They’re poly urethane.
I’m right in the middle of replacing the 69 rear with the correct 67 dual traction bar setup. Waiting for springs from Eaton. My 67 bird was a 326 4 speed and had both bars originally. The mounting studs and rivnuts look to still be usable
