BP 408 Oil Leak

Hello. Trying to figure out an oil leak on our new crate engine. I have oil dripping off of the filter and onto the header
I’ve never experienced a bad filter gasket in my life but thought perhaps it was due to happen so I replaced the K&N HP-2004 with a Napa Gold 1068. Still leaking.
Either I’m using the incorrect filters? Or the filter plate in block is leaking which brings me to my second question
Please excuse my ignorance but is this an LA or Magnum block? It has a 6 hole filter adapter and from what I’ve read here on the forum the Magnum 6 hole and LA style 4 hole are not compatible and if incorrect would it leak or just not assemble?
Are the filter plate to block gaskets the same? I’m using the straight adapter not the 90 degree with short filter.

Thanks to all.