Lawson Aschenbach will shift from one Chevrolet GS class team to another for the 2015 Continental Tire SportsCar Challenge season.

The Florida native leaves the CKS Autosport team, which sold its pair of Camaro Z/28.Rs to Mantella Autosport, and heads to Stevenson Motorsports as co-driver of its No. 9 car with Matt Bell.

Aschenbach is the 2010 ST class champion and a back-to-back champion in Pirelli World Challenge GTS, having won the last two titles in a Chevrolet Camaro.

Aschenbach replaces Andy Lally, who announced a couple weeks ago he would be seeking a new ride. Lally and Bell won the CTSC race at Canadian Tire Motorsport Park last year, while Aschenbach and Eric Curran took a last-lap win in the CTSC round at Road America.

Andrew Davis and Robin Liddell, who finished second in the 2014 GS standings, will continue unchanged in the sister No. 6 car.

“This year’s driver lineup is one of the best we’ve had,” said team owner John Stevenson. “Robin, Andrew, and Matt have a long history with Stevenson Motorsports and adding Lawson only strengthens this team even more. The depth of talent between these four drivers is just incredible.”

“We had a strong season last year and made a lot of progress with a brand new car,” he added. “This season we have a lot of data to build off of which gives us a better idea of what to expect at each racetrack we go to.”

The formal CTSC entry list is due out this week before its own testing at the Roar Before the Rolex 24. On-track sessions begin on Friday.