I"m still debating on buying a case or not. With my 5 quarts in the pan, plus my Frantz, then a 1 1/2 quart filter, my Amsoil is going to go fast! LOL
As far as "fitment" goes, they are listed for my exact years of trucks, so there should not be any problem on pressures. I've usually only seen the super long ones on the older Chevy dump trucks though.
As far as the ADBV goes, the filter mounts vertically so its not needed anyway. The later V8s mount differently so I hear and need the ADBV.