I bought the one on ebay because it was described as being a 9799130 7-1/4” dia and 2-3/4” deep. What I got was a #196669 7-1/8” dia 3-1/8 deep and a 3/4” center hole. I can’t find much info on this pulley but I can’t use it anyway so it's going back. The 9799130 pulley is supposed to be the same as a 9799127 except the 130 is 7-1/4” dia and the 127 is 8” dia. I have been researching for correct pulleys to use with an 11 bolt WP in my 68 FB. I realize I will need to tweak the correct 68 alternator bracket slightly. The engine is in the process of being rebuilt so I can’t check anything yet. From what I’ve researched I need a 9790846 crank pulley which I have and a 9799127 WP pulley. The 9799130 would have been a relatively cheap replacement with only the dia being different. Did Pontiac use different center hole sizes? I need a 5/8" center hole. And the fun never ends……
I did research on this site for the new WP and went with a Gates on Amazon (GAT43102). What a great deal. All brand new cast iron case and impellor delivered for $28.75