I imagine there are 3 different part #'s for the different bore sizes but I don't know for sure. PM zippy, he is always helpful in finding gm part #'s. (don't kill me zippy)
I got some for my 6.0L for $31 wholesale each.

 

Thanks for the help guys

 

I just went to SDPC and ordered Cometics. That's the second order I placed with SDPC today and I like the personal service I got from both guys.