WRT Chevy 2-banger: good mechanic, bad engineer.
What they made has "one up & one down" and is horribly out of balance, and has that same soothing offset exhaust note as a 350 Honda... until something breaks.
A better choice (but much more difficult) would have been to use the 2 center cylinders which are "both up" (same piston position) like a British twin.
A common Smiths industrial compressor (on its own trailer) is a converted Ply-Do 230" flathead L6.
