yeah man its worth it,my brother couldn't get the top part of the downpipe connecting to the header so,I have to go a muffler shop that has a lift and have them finish the upper part of the downpipe.then it will be completely shut for welding,but I notice since its very close to being completely sealed,I gained quite a bit of hp and notice my car moves a hell of alot smoother,but its also really loud at the moment lol.After it is sealed completely it will have a better tone to it.
2006 Chevy Cobalt LT
K&N air intake system
Custom 2.5" dynomax exhaust system
B&M tranny cooler
stainless steel pacesetter header
5900k light bulbs
2.4 intake manifold