Got the new JDL 4-2-1 EL header, op, and fp installed yesterday. It only took a little massaging to get the headers in but not bad and clearance is pretty good. I cleaned up the mounting holes with a dremel and used a dead blow hammer to just bend in this part a little (see photos below) - it was pretty tight and made fitting them in a little tough. Didn't need to bend it much though. It looks like just an extra piece of sheet metal over the lower part of frame. Not sure if it was absolutely necessary to bend, but it did seem to make them go in easier.
Other top tip... Put in the overpipe before you put the new headers on. Ask me how I know.
Videos of the exhaust and weight savings are on my Instagram page:
Instagram.com/jhillmotorsports
I can't wait until spring to get this thing tuned and drive it!!