Everything is brand new from the exhaust vendor Phabbing. No clamps are included, we prefer to weld exhaust systems because clamps look messy underneath the car. The exhaust is easy to weld because everything is slip fit. If you need clamps, we suggest stainless steel band clamps over "U" clamps. The true dual system was built on a Camaro and if you're a Trans Am owner you may need some adjusting on the tips in order to center them in your factory valance. This is a big system and ships in multiple boxes with signature confirmation required. Please message us with any questions and we will get back asap, we are in the shop 9-5 daily. If you need a qoute for custom installation please email us.