How much for 71 Thermoquad?

It’s not a theory there sport. It’s a fact.
And you know this because........This is where you provide evidence for said claim.

I will say it’s hilarious of you to postulate that every emissions gain is also a performance gain.

Nope. That's your postulation. Go ask the NASCAR guys why its important. Maybe they need you and Bewy to show them why they have no idea chasing thermal efficiency to go faster.