What Oil Restrictor do I need?

[Kracka]

A journal bearing 20G doesn't need an oil restrictor. Oil pressure from the port on the head is much lower than engine oil pressure.

Oil pressure is temp and RPM based, it has nothing to do with load so please don't list an oil pressure for WOT. 100+ psi at idle with a cold engine is perfectly normal. Once the engine is fully warmed up oil pressure should be between 5-20 psi at idle. At 3k RPM (once fully warmed) oil pressure is generally 60-80psi.