Taco Bell hasn't specified when it will release its Doritos Locos Tacos in that flavor, however.

WSJ: Doritos to roll out chips in 'Taco Bell' flavor

The new Doritos Locos tacos introduced in March, have been a huge hit, and sales have exceeded analysts estimates.

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Doritos Locos Tacos now account for about a quarter of all taco sales at Taco Bell, according to Creed.

WSJ: Doritos to roll out chips in 'Taco Bell' flavor

"I've worked on diesel, but there's nothing like steam and the Gresley locos were the best of them all, " he said.

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But Frito-Lay didn't want its Doritos name on just any taco shell, so it created a special, crunchier shell for the Doritos Locos Tacos.

WSJ: Doritos to roll out chips in 'Taco Bell' flavor

To mimic the taste of Doritos Locos Tacos, Mukherjee said the Taco Bell-branded Doritos this spring will be a combination of Nacho Cheese flavor and taco flavor.

WSJ: Doritos to roll out chips in 'Taco Bell' flavor

Additionally, Taco Bell has found great success over the past year with new menu items, highlighted by its incredibly successful Doritos Locos Tacos and its new, higher-end Cantina Bell menu.

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Without giving details, Frito-Lay North America Chief Marketing Officer Ann Mukherjee said in a separate interview that Doritos Locos Tacos have also boosted sales volume for Frito-Lay, which supplies taco shells for Taco Bell.

WSJ: Doritos to roll out chips in 'Taco Bell' flavor

Nacho Cheese Doritos Locos Tacos has been one of the biggest new menu items in recent times, with Taco Bell selling more than 300 million of the tacos with flavored shells since their introduction in March.

WSJ: Doritos to roll out chips in 'Taco Bell' flavor

The idea for the Doritos Locos Tacos, for example, came about in early 2010 when Taco Bell CEO Greg Creed visited Frito-Lay executives in Plano, Texas, to discuss how to celebrate the chain's upcoming 50th anniversary in 2012.

WSJ: Doritos to roll out chips in 'Taco Bell' flavor