I also ran the nwof header and was very impressed with the quality and performance.
noticeable difference in power and power band.
They are expensive or I would have one on this truck. It came with a pace setter header. all top end power with the pace setter. poor quality. reminds me of the old cheap headman headers.
I also had the lce header on my two wheel drive 22re truck. It is hard to compare 4x4 vs 4x2 but My lce header was again all top end power. the nwor header had a deffenant advantage at low rpm pull.