If you search megan test pipes and read about some experiences you see alot of mixed stories. Seems like some people have no problem, bolt right up, great fitment and quality. While others but the same product and it is horrible fitment and they hate them. I would go with specialty Z's test pipes. They are true 2.5 test pipes unlike Z1 which i think is only 2.4 and they seem to run a great business with top notch customer service.