Quality Just OK for the Price!!.
Had to modify one factory manifold nut to get it to go back on by grinding down the outside edge and also bore out the cat bolt holes on one side to get back together. Removing the OEM heat shields took a lot of time and a few words to get out. About 5-1/2 hrs from start to finish. All in all not too bad. They did seem to increase output in the mid range. With the Banks Monster Exhaust and a cold air intake this little puppy moves along really nice. Last addition will be the Bully Dog GT tuner.
Pretty nice system.
Took about 2-1/2 hours to install. Fitment is good. Had to bend the rear hanger to prevent it from rattling, but all said and done smooth install. Woke the 4.o up on mid range. A little louder then anticipated but tolerable. Has a nice low growl. Added a set of JBA headers which opened it up a little more and seems to have a lot more power.