Discrepancies in information on LA and Magnum series oil gallery plugs

Just wanted to add a thought here about plugs or no plugs. I think on a stock engine running stock oil pressure c45# it is not enough pressure on the back side of the plate at the hole just 14 psi. If you are running a race engine with 90=100 psi oil pressure thats 28 psi or more on that area of the plate so using the plugs in that circumstance adds a measure of safety so the pressure won't lift the plate. I will include a real world example. Years ago in the 70's when my Dad and I had our shop in Salt Lake our primary cars worked on was Jaguars, a E type cam in with the oil filter can blown back over the hols down bolt, the bolt had a washer head about 3/4" in dia. the can was cone shaped on the bolt end and the can was folded back over the bolt about 1/2"??? WOW. Never having seen this before WTF, so took apart got another can and put back together to start and see what's up refilled the pan E types held 10 quarts in those days started engine bam big noise and 9 quarts of il on floor before I could get the key off, umm-WTF again. unbeknownst to us was the oil pressure relief valve was stuck. the E type use a peculiar pintle type valve it was three fluted in the bore and used a taper to seal on closed. Took filter housing off found the stuck valve it had worn off kiter. Replace the housing and another can and oil pressure sender refilled started all good. I asked an engineer friend who knew about these things and he said it would take north of 1000 psi to push that tapered can that way as there was no flat surface to push against. Have worked on a lot of aircraft over the years with HIGH PRESSURE hydraulics FA-18 uses two high pressure systems one is 3000psi and the other is 5000psi you have no idea of the damage done with a leak, the use only stainless tubing no hoses ever and B nut connections are really peculiar.