Rob, exactly I think where more of the road going guys have trouble with
oil pressure loss is in-adequate plumbing, and not thinking of the
oil system as a whole unit, bit like more hp and the vicious spriral starts with parts and $$$$$.
Alf,
There are some fine looking expensive pieces out there and no doubt they work well, I have the Canton as it has plenty of flow (approx 40gpm) for my alloy engine. I had a Mocal thermostat on my FE390 and no problem, some guys do a little de-burr of the Mocal as the casting isnt that well finished.
Canton in my opinion use the handy US philosophy of bigger is better for the purpose of flow, so I have used their 6" cannister
Oil filter as well which flows 45gpm and is claimed to filter down to 8 microns using a special depth filter media.