Kyle Busch is growing tired of stock car racing's governing body trying to manufacture tighter competition in the annual All-Star race at the expense of the Cup Series' heavy hitters. ''That's not what I signed up to be a NASCAR driver for is to scrunch the field up and take the advantage away from those guys that are fast,'' said Busch, last year's All-Star race winner. In its seemingly never-ending quest to make the All-Star race more competitive and create more passing opportunities, NASCAR announced this week it will test a different aerodynamic package at the May 19 event at Charlotte Motor Speedway by requiring cars to have restrictor plates.