http://www.foxsports.com.au/motor-s...production-based/story-fn2ms4i4-1226188377787 Although the category is moving to bigger and more powerful 1000cc engines, the introduction of the new Claiming Rule Teams will see several new squads enter with more budget-friendly and production-based bikes. Just days after taking victory in the final race of the season in Valencia, Stoner warned that if MotoGP moved towards making the entire field run with the lower specifications, he would consider leaving the sport. "I think if we kill prototypes then we may as well be racing touring cars," Stoner said. "It's no different to this. It'll definitely take everything out of the racing for me. "I won't find the same interest to the point where you can maybe get a street bike, put a different chassis on it, a bit of suspension and this and that, and have a competitive bike. "(Prototype racing) is the way it's been for so many years. There have been a few things recently about costs, which have definitely increased, and the amount of personnel needed to run these bikes. They're definitely more complicated than the old 500cc. "But if it does change, then it's definitely going to be disappointing for me and I don't know if I'd want to be a part of it."