Narrow hips and no oil cooler opening under the grill

[RunWithScizzors]

I'm looking at CSX3279. Clean look!
https://canepa.com/photo-gallery/1967-shelby-cobra5075/
The first one I've seen with no oil cooler opening under the grill!
I don't have the trained eye sufficient to tell if it has the "narrow hip" rear fenders, but it does have flares. Unlike CSX3158, for example.

I'm spec'ing out a new build 427 Street Roadster replica, loving the clean look. No roll bars, no hood scoop, undercar exhaust, sunburst wheels, etc. The only thing I do not care for (aesthetically) with most original street roadsters I've seen is the cavernous space between the rear rubber and the fenders.

For originality, can anyone tell us more about the coil spring cars made with narrow hips and/or no oil cooler opening under the grill? I understand that there were 260 street versions made, approximately 33 with narrow hips. (I assume that all of the narrow hip cars were street versions?) How many were originally made without the oil cooler opening? Were all of those street versions?

Thank you