I modified the oil bath on the 8ba in my '39 p/u. Ran it until a buddy gave me a more compact unit off I believe an old Chevy 6 banger. I believe I still have the Wix number somewhere. I'll look. This link is for specs on Wix filters which might help to find a filter if you decide to go the paper route.
https://www.wixfilters.com/lookup/FilterBySize.aspx