At least I understand what old school means
In fact no one cares if you turbocharged an old school flathead or participated in Challenger space ship design. OP asked a simple question and instead of a simple quick answer you inserted turbocharged engines. Who's now not adding technical usefulness to the discussion? On top of that you turned defensive too
OP would have said it if he is, or plans to be "turbocharged" in what looks like an 80s or 90s engine. Despite being so remote of a possibility.
old school
/ōld sko͞ol/
noun
used, usually approvingly, to refer to someone or something that is
old-fashioned or traditional.
"amenities that my parents, being of the old school, still take for granted"