Mopar W-5 Heads and M1 Intake Manifold

The one pictures is advertised as the "Small Runner"'or AKA street intake.
I have the "Large Runner" intake as well you mention. THAT one is for surely a race intake.
Holley only carb pad, big runners with plenty to port out. Inside the plenum and the plenum itself is different!

The street intake should still be very capable of turning in a good time slip. I think it well suited for a street terror. TQ fans can still make use of the carb on the street intake. The plenum needs work for use with a Holley for best results.

I see a lot of these W5 street versions running around. Makes me wonder if they were purchased by mistake.