I just got the focussport race header and did the work all myself. the actual pipe has a huge crack in it right at the right angle before it bolts onto the header. In desperation, I completely broke off the rest of it and like you said put a penny in there. Atually i put two. No cell has come on yet and the car is running fine. So, I guess I did it right. I'm going to leave it as is for now. I have a ford racing intake manifold that I'm installing next week. I'll check out that plate.