Sounds like you're serious about protecting your investment.
None of the cheap kits around fitted my idea of rock solid, and the Jap ones are way over priced, carrying an insane amount of mark up.
I liked the look of a certain chunky CNC cut take off and adapter that I saw on full house drag cars, PAC cars, etc etc years ago. Took ages to find them, they're the same bits sold here
I grabbed the block take off and filter head from ARE plus a Earls -10 AN fitting for a pressure sender. I then picked the oil cooler of choice, few $100 bux of aircraft fittings later and some hose and hey presto! It's the most hardcore, solid solution I could think of.
I later found out, that Earls actually make the billet bits, so you can import em from the US for almost nothing with the way the Ozzi dollar is now
No way would I use a cheap $400 kit with the above available, I don't give a shite that people have been running em for years with no issues. Def a case of pay now, save later.