I had the exact same problem on mine, I tried bending the heat shield out of the way but it still wouldn't fit. I had to take the header down to the muffler shop and have them weld in a new bung in the proper place and put a bolt in the old bung.DAYTONA81 said:i'm having the worse time installing the o2 the passenger side the heat shield is in the way...i need help on installing it any advice needed