I like the exhaust system. It was custom bent and welded by a local shop that does street rods and classics as well as everyday cars and trucks. The crossflow muffler (2 inlets, 2 outlets) in front of the axle is still available but the brand name is not on the receipt. The resonators are DynoMax Super Turbos. They have a quiet low rumble at idle, a rich not overpowering sound on the freeway and a nice throaty roar at full throttle. 2.25" throughout, except the tailpipes at 2". They might not be suitable for a car that spends a lot of time at the track, but they are very nice on a street cruiser.