KohR Motorsports is set to expand into a two-car Ford Mustang GS class operation, as interest in the GT4-spec car continues to grow in the IMSA Continental Tire SportsCar Challenge.

The Michigan-based team, fresh off its second win of the season and first for team owner/driver Dean Martin and Jack Roush Jr. last weekend at Watkins Glen, will take delivery of a second, brand-new Mustang later this month.

According to Martin, it would join the No. 59 car in Continental Tire Challenge action later this summer, either debuting at Lime Rock Park or Road America.

“When we leave here, we’re heading up to Multimatic and we’re going to work with them to build it,” Martin told Sportscar365 last weekend at Watkins Glen.

“It won’t be ready for CTMP but it may be ready for Lime Rock.”

While having run an additional Mustang at Sebring for Scott Maxwell and Jade Buford, who scored the car’s maiden win, that chassis has since been sold to PF Racing for use in World Challenge.

Martin said they’ve yet to determine the driver lineup for the new second car but said the level of interest has been high, despite delays in the car’s GT4 homologation impacting its initially planned lineup.

“We’re still working on it,” he said. “The guys we had ready to go have had to find something else to run because the car was so late being homologated. But I’m sure we’ll have some good guys.”

With the final GT4 homologation understood to be just days away, additional Mustangs are expected to join the grid, including a brand-new car from VOLT Racing for this weekend’s round at Canadian Tire Motorsport Park.

The VOLT squad borrowed KohR’s No. 59 car in the PWC round at Lime Rock Park in May, in order to evaluate a potential switch from its pair of McLaren 570S GT4 entries.

Martin said there’s a few other teams also looking to purchase Mustangs.

“It’s been phenomenal,” he said. “It’s such a fantastic car. I can’t say enough good things about it. It’s [like] a Rolex GT car from five years ago.”