Oil filter for KENZ oil filter kit?

[JayJay]

I'm moving through changing fluids on my new-to-me 31 Town Sedan. Got the transmission and differential, next is oil (kinda due, since the last change was in 2012). It has a KENZ oil filter kit - the kind that bolts onto the timing cover. There's a copper tube leading from atop the oil pump to the filter adapter housing.

What is the proper filter for this kit? The filter on it is a FRAM PH2825, but I have no idea if this is the right one. What filter do you folks with this kit use? My local O'Reilly sold me a Wix 51361 as "equivalent" but the two filters not only don't look alike, the gasket diameters are different. So it will go back.

I appreciate the help, folks.

JayJay