nismo header w/ cat

I am posting this tread for anybody who is looking to buy a nismo header w/ cat. DON'T DO IT. I have gone through 4 of these in the last 17k miles. there is a big problem with the cat coming apart and sliding down your exaust downpipe causing your power ban to be basicly useless and causing a service engine soon light. it has also broke 2 of my o2 sensers.. the bad thing about this is that nismo will not warranty this part and they have even made mods to the header. the mod is a 1/8th inch wide piece of metal that runs across the bottom of the cat to keep it in but doesn't work.. so for $650-$900 this header is not a way to go..