Differences in the Duster shark tooth grill.
I have one here out of a non V24 car. The car was 340 3spd. Bahama yellow with a black vinyl too . No black out on hood or 340 wedge. It is sitting next to me at my desk. It is a molded in black grill painted silver and the fins are black. As you described.
I also like 70 grilles with the extra chrome top and bottom. I have already added that chrome to a Sharks tooth looked neat . the guy colored keyed the surround upper and lower plus the headlight rims the color of the car like a Sizzler. 69 grilles are also nice. first place is sharks tooth then 70 then 69 . 71 and 72 standard are good for parts like a 4 door car. LOL