To whom it may concern, I found a little mistake in your tech data. I don't want to **** anybody off and maybe it is no big deal. I find this web site to be the best Camaro web site on the net. I have gathered some great info here. However, in your rear end tech info you have the code PY listed as a 10 bolt. The code PY is indeed a 12 bolt. I have an all #'s matching, original 69 RS with POP. It has a PY 2:56 rear and it is a 12 bolt. I have verified the numbers with the POP since I recently dropped the rearend to detail and install new 3:73's posi.