Read on here Pacesetter makes a header for our engine. On the Pacesetters page it says for 2wd. I have 4x4 does it matter?

 

Im not sure about your question but just so you are forewarned, I have heard a lot of problems with pacesetter headers. A friend of mine who works at a local speed shop tells his customers that they won't install their headers because of to poor fit and problems they cause. hopefully someone on here will be able to give you first hand experience good or bad.