Man I have the front manifold off and the o2 sensors and the y-pipe. But the damn rear manifold and the very top o2 sensor and that EGR tube that goes into the manifold refuse to come out. I read the MSDS directions and they say to take the alternator out. So I attempted to follow thier directions. It says there are two 13 mm bolts going inboard and one 10mm out board. I could not find anything that matched their instruction. We removed two outboard bolts 13mm and a 10mm but the alternator barely moved and then seemed like it was stuck. I can't figure this damn thing out and it's making me crazy. Once the alternator comes out I'm sure I'll be able to get the rear manifold off but until then I'm lost on this alternator deal.