Alot of my buddies were using a PF35 AC filter. It's a longer filter and holds more oil that's why. So now the PF35 is NLA. PF1218 is the new #. I go to a Pep Boys and an Advance Auto and the 1218 in one store is different than the other. What filter would you use. And for the BB guys what filter are you using. I prefer AC Delco. Heres the pics: Later. Mark!