Were 428 Super Cobra Jets available both with and without ram air induction?

428 Super Cobra Jets were available both with ram air induction (identified with VIN engine code "R") and with a standard air cleaner assembly (identified with VIN engine code "Q"). The engine code isn't what determines installation of a Super Cobra Jet engine; it's the rear end codes of "V" (3.91:1 Ford traction-lok) or "W" (4.30:1 traction-lok or Detroit Locker) that make the difference.