If you're looking for an upgrade to your exhaust system that will give you better performance, the MBRP S6150P 4 Inch Performance Series Turbo-Back Exhaust System is a great option. This system is made of aluminized steel for durability, and features a 3.5" turbo downpipe. It's a great choice for anyone with a 5.9 Cummins engine from 1989-1993. Please note that this product does not include a tip.