I installed NWOR headers and exhaust with highflow cat this past weekend. I end up just doing the dump pipe instead of running the piping through the rear axle for the center exhaust idea...It sounds great and I can feel the power gains.
I've also made an intake box with cardboard box and soaked it in resin hardener. I'll fiberglass it then paint it when I have time later...and maybe make a top lid while I'm at it... Oh, and the cutout for the air box...I'll find a PPE pipe as a ram air that goes through it.
Your resin soaked cardboard air box gave me some ideas to make an air box for my Bronco II after I body drop it.
how was the install of the header on a 1-10 scale? I have a new doug thorley header for mine that I need to install. Just wondering if I should take it to my friends shop for lift and air tools?
1 being changing out plugs, 10 being engine swap...I say the header install is about a 3. A lift would be nice, but I did mine in my garage with jackstands.
I got mine off of eBay for $100 shipped...along with the muffler. But you can get them new on the NWOR website.