Purolator & Wix will not warranty standpipe oil filters for /6 but Baldwin will.

The post is about oil filter types that have an integral standpipe - and which manufacturers back them for use on the slant-6. There is no contesting of the validity of the oil-pump-mounted standpipe going on here.

It sounded like there was some importance to having a stand pipe. So this is more of a purist 'restoration' type of discussion.