Van Gisbergen shocked the motor racing world earlier this month when he became the first driver in modern NASCAR history to win on debut.
The sensational victory came on the streets of Chicago with the Kiwi taking over the Project 91 entry at Trackhouse Racing.
It has now been confirmed that the Supercars regular will return to the Cup fold for the Indianapolis road course race next month.
That will be a different challenge for van Gisbergen given the Cup regulars having experience on the track, while Chicago was new for everybody.
Street circuits are also very familiar to van Gisbergen with four of them on the current Supercars schedule.
Still, Richard Childress Racing driver Busch remains convinced that van Gisbergen will be hard to beat at Indy, even if his advantage over the field won't be quite as big.
“I would say he is the favourite going in, for sure," he said.
"I would say that the gap will be closer from Chicago to the rest of the field that he had. He had us all beat by six-to-eight tenths of a second a lap.
"I would say going into Indy we should all be within two-to-three tenths, but he will still be the best guy.”
Source: Autosport