Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
Yep, I have had the rear suspension arms disconnected for a few weeks now and there is no pin that I know of, just bolts and nuts.They have an eccentric nut and bolt.....
So them saying the pin makes me suspicious they don't know what they're talking about
Occasionally the nut may strip the thread, though highly unlikely....The bush generally wears out causing a problem getting the camber right
I would appreciate Concentric Bolt part No Pls, as this would be the part that needs replacing.They are probably referring to the concentric bolt. That is the main adjustment for camber on the rear. If you can confirm that is the correct bolt I can provide you with a part number.