Newly crowned IMSA Porsche GT3 Cup Challenge champion Sean Johnston will make his American Le Mans Series debut this weekend at Petit Le Mans as he joins up with GTC team JDX Racing.

Johnston will join team and series regulars Michael Valiante and Chris Cumming in the #11 Porsche, one of eight GTC cars in the 42 car field for the 10 hour, 1,000 mile race at Road Atlanta.

“We are extremely excited and fortunate to have with us the 2012 GT3 Cup Challenge Champion, who we have been watching all season long,” said team co-owner Harrison Brix. “Needless to say, his performance in GT3 Cup has been impressive. He got his first laps in the JDX GTC car at Road Atlanta on Monday and did a great job, so this has the makings of a great week. That Sean Johnston is moving up from the GT3 Series where Hertz is an Official Partner to our sponsored JDX Racing Porsche in ALMS, only adds to our excitement”.

“With my first laps in the GTC car having been completed this week, I’m happy to be opening a new chapter in my racing career, and that is endurance sports car racing!” said Johnston. “I had a great time this week, and am already learning so much about this new environment with so many different cars. I’m loving it so far and looking forward to working with the JDX guys to kick-start my development as an endurance racing driver”.

As well as racing in the centre piece of the Petit Le Mans weekend Johnston will round out his successful GT3 Cup Challenge campaign, the final two rounds of the season taking place over the course of the weekend.