it is extremely rare.
on the other hand, i've never heard of anyone besides myself who was even slightly interested in it. and the only reason i was interested was that there was a possibility that that a 2v designed intake might work better with a 2v than a 4v intake with an adapter plate.
and the only reason i was using a 2v was due to rules ...
The way to crush the bourgeoisie is to grind them between the millstones of taxation and inflation.
Vladimir Lenin
Government schooling is about "the perfect organization of the hive."
H.H. Goddard, Human Efficiency (1920)
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