I know this topic has been brought up before, but I can't find it anywhere so here goes. What exactly needs to be done to install these headers on our sc's? I know that there are a couple of mod's that are done to get these to fit, but I can't remember what they were. Also, to those of you who have installed these, how much of a difference did you notice over the stock manifolds? Any help is greatly appreciated.
Doug
Doug