Yes.And let me say Im glad theyre done because they are a pain.Sounds about the same at idle and at WOT it has a slighty tougher note.(Very slight hardly noticable)As far as performance its hard telling since I did a PI TC,valve body,and 3:76 lsd at the same time.Now if I can just find time to install my 125hp zex kit!!!Let me know if I can be of help.