I have an 18 2500. Spending 2gs for headers makes me sick. I was thinking of trying the Jeep or Durango 6.4 manifolds and fabbing up the EGR tube adapter. These factory manifolds choke these engines down pretty good.

70 Challenger
1960 Town Wagon P Pump 24v cummins project
06 Mega 3500 Drw 2wd
12 Durango R/T
18 Power Wagon
67 A100