It looks like I was wrong about the suspension being fully rebuilt on only one side, I had a closer look and it's just the LBJ on the driver side that's new. The upper ball joints on both sides are toasted too so now priority is just replace all the ball joints and bushings. I had a look through my big stack of invoices and it looks like the outer tie rods are fairly new though. I also checked out the PCV valve and it looks like it might have been replaced at some point because it does not look OEM. So, new ball joints and bushings it is.