Ford oil filters fit Pontiac V8
a few years back I was cleaning out an old closed down garage shop, got a pile of vintage 1940-50-60's parts and sold them all on the net. One box was a case of brand new oil filters still in the packages. The number was a Ford part number reference. I had a Pontiac oil filter adapter so I tried one on it. Guess what, the Ford oil filter fit the Pontiac. I kept the box of filters and haven't bought one since, and use them on both my Firebird 455 and Ford truck 400M engine. Same filter. BTW they should also fit Olds, and maybe even Buick and Cadillac too. So if someone is "getting rid" of new Ford oil filters they no longer need, see if they fit your Pontiac.