340 in a 1966 valiant, remote oil filter woes

SWED67barracuda said

i did it like this . And then plug the center hole with a bolt.

View attachment 1715246451

View attachment 1715246452

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What is going on here? How do you know where to tap though the plate/etc.

I am not opposed to this at all, it gets rid of something I don't need, as I just need to get oil to/from the engine and through my remote oil filter... So I am intrigued.