[Mr70]

I've only seen no-stripe cars with the domed hood.

That's because the stripes weren't included with the standard domed hood.You had to pay extra & say you wanted the D-88 F&R stripes if you stuck with the domed hood.They were automatically included with the functional hood.

Was it possible to have no stripes with the functional cowl hood?

Sure,if the customer ordered the ZL-2 functional hood,then said "Now Delete the D-88 Stripes" to the salesman for a $68.50 credit.
That is a nice looking color combo & thorough description as well.