Katherine Legge believes DeltaWing has the potential to challenge for wins in this year's United SportsCar Championship after making significant strides over the winter.

A fourth place finish with the coupe at the end of the 2014 season during the Petite Le Mans raised hopes that the car had turned a corner and a raft of changes over the winter, including the signing of three-time Rolex 24 winner Memo Rojas, has also raised eyebrows.

Indeed, when Andy Meyrick placed the car fifth on the grid for the 2015 Rolex 24 at Daytona despite mechanical issues preventing it from completing a single lap prior to qualifying, it appeared a breakthrough was imminent.

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It is a surge in form that pleases Legge, the British racer having been involved with the ambitious project since its early stages, when it initially competed in an open-cockpit configuration. Present during the difficult occasions as the team struggled to bring the car up to a reliable and competitive standard, she feels the ingredients are now there for DeltaWing to challenge the best.

"I have been with it from the beginning and it is massive," she told Crash.net. "We started off with the open-top and then we moved to the coupe, so it is close to my heart. We have experienced the pain, but we worked ourselves up to fourth place at the Petite Le Mans and we should have been higher.

"It has been a hell of a journey and it is Dr. Panoz's baby and we are trying to nurture it into adulthood.

Reflecting on the Rolex 24 itself, though Legge admits the relative lack of track time means it is unlikely it will complete the race without any issues, more testing and shorter future races will see it come on strong.

"It can absolutely win," she added. "Everything we have developed up to now at the rear of the car, it is unlikely we will be without issue [in this race] because we have not had time to test everything. [A win] is entirely possible, but we are still learning. We want to win really badly but we are managing expectations."