Unfortunately, no you can't. Every exhaust catback system is specially engineered & developed with the optimum exhaust flows, angles and specs. Starting from the pipes, designated resonator, muffler and construction are all precisely fine-tuned by Max Racing professional motorsport engineers to make sure the car can get perfect performance & sounds from low rpm to high rpm.
Exhaust packages are paired with the best exhaust resonator & muffler for specific cars. They require welding service to install at a local exhaust workshop and do not include pipes or any other services. You can get the exhaust sound mentioned in each exhaust upgrade package but they are different to the full catback system since parts in the exhaust catback are not sold individually.