The person that had the car before me put on glass packs on my cobra. I am looking to get a cat back system on my cobra and a X pipe with no cats. Any ideas on brands? I see MAC has some how are those? So does flowmaster. I am gonna need some of those mil eliminators or whatever they are called to mess with my check engine light too. I am looking to spend around 600 maybe 650 shipped. For the cat back x pipe and eliminators. People say that the weld ins are almost as good as the cat backs any thoughts on that? Feel free to point me in the right direction of where to buy them. thanks in advance.