Whatever you do please do not run these filters...Started to do some searches over on LS1tech and found out these filters flow 1/2 the volume needed for our cars. For whoever didnt know about my problem the car would tap violently as soon as it warmed up. GF's friend did an oil change w/ amsoil race oil & a amsoil filter tonight and the tap is no longer. Car sounds better then it ever has, even in park/idle. Drove it 45 mins home on 295 and she runs like a top...Here im thinking it was going to be some huge repair...amsoil has a customer for life