Slant six in a Miata ? Why ???

I have a 1970 Charger project that is ratty looking and will stay that way for awhile. I'm fine with that.
I actually like the UTG channel and do agree with most of his stuff. I didn't agree with his opinion about subframe connectors but many other videos have been great.
I see his videos with his booger-popcorn welds and just facepalm....He is a very sloppy fabricator and welder but a great dude for many other things.