Originally Posted by
fastback
Stock header is 2 pieces - the upper, cast manifold, and the lower piece, between that manifold and the cat, which I believe is referred to as the A-pipe, and that is usually where the problem is. I just happen to be selling these parts off my car, so here's a pic. Top is the upper manifold, bottom is the "a-pipe":
When he fixed mine it was right about where the shadow ends on the lower pixture..... yeah thats all