Using your ISR Series II GT Single exhaust is straightforward. First, make sure you have all the parts in the box: the GT Single rear section, the resonated mid - section, and the gasket and hardware pack. Follow the included instructions to install the exhaust on your 1995 - 1998 Nissan 240sx. Remember, this product is for off - road use only and can't be used on public highways in most cases. In California, it's only legal for racing vehicles that are never registered or licensed for road use. When it comes to maintenance, regularly check the exhaust for any signs of damage or loose parts. Since it's made of stainless steel, it's pretty durable, but you can clean it with a mild stainless - steel cleaner to keep it looking good. Avoid using harsh chemicals that could damage the finish. Also, be careful when driving over rough terrain to prevent hitting the exhaust and causing damage to the pipe or muffler.