+5 for SD headers
I had the V-band moved above the flex section so when there is an issue with the flex all I have to do is drop the downpipe.
I also had a O2 bung welded on the opposide side of stock SD headers, near the crossover, as far forward as possible. This gives ~ 3/8" clearance for a wideband o2 sensor.
The stock SD headers o2 interfered with the firewall and I ended up using an old jackstand and a 2"-2.25" reciever hitch adapter to dent in the firewall for using this location as well. (I heard some use an air hammer, mine was not powerful enough)
