Proctor will handle one of the new two - litre turbocharged Astras .
Proctor was runner - up in the Ginetta Junior Championship in 2015 and eighth in the French hatchbacks last year .
Proctor , who was runner - up in the Ginetta Junior Championship in 2015 and eighth in the French hatchbacks last year , will handle one of the new two - litre turbocharged Astras .