OIL FILTER
this chinese stuff works
https://www.ebay.co.uk/itm/374697087728?
whack on a ryco z9 i guess the nagle will need to go down between engine mount and exhaust
is it RHD? or LHD...
or use a take off instead and pipe it up to a remote filter head on the bulkhead somewhere.
i tend to go here, see whats available and buy it from wherever
https://www.mocal.co.uk/products-rfh.html
you may well have a MOCAL agent in oz
Dave