K. I got a question for ya. The pacesetter header was made to fit the 3sfe correct? But it also will bolt up to the 5sfe. My question is: The 5sfe has two O2 sensors along the manifold. The pacesetter header only has one hole for an O2 sensor. So, do you just leave one out then? Not gonna mess anything up is it? Which one would you leave out? The second sensor?

You can put another hole in for it, or you can splice them together some how. I would just put in a new hole.

just drill and tap or drill and weld on a nut, or splice in the 2 O2s onto one. Good idea, I can get pacesetter stuff for cheap. Might just inquire on that.

Man. Drill a hole? That could be one of the best option huh? If it was just an intake I'd drill a hole. On the header though. I don't know bout that one. A lot of people have used the pacesetter header though. What did they do? I'll ask around on other forums too.

Do you have a pic of it? I am looking for a header for my GT (5sfe) engine...