Maybe I am just getting more miserly as I grow but those struck me as expensive.
The eyes (the the rubber bushes slip into) are absolutely fine. It is just the end plates that I might refab and the studs which have worn. They carry the weight of rear of the cab which is why I had thought possibly grade 8s.
Looking at the replacements, it actually looks like they use bolts as opposed to studs so I might just remake the end plates and use decent bolts with existing eyes.
Thanks...
Oh, and on a side note looking at them now I see that the 2 studs that wore were the two that bolted to the cab as opposed to the two that bolted to the frame. The frame ones are 100% fine.