The EG comes right out of the exhaust manifold on the 6.7 Cummins - the 6.4PSD pulls EG from after the cat before the DPF.
I believe that any back pressure required for proper EGR would be created by the VGT and not the DPF... could be wrong on that one.
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07.5, 6.7, Auto, QC, 4x4, Lots of gauges - ISSPRO (Pyro, Boost, Trans Temp) PriCol Optix (Fuel Pressure Lift/Rail) AutoMeter (Oil Pressure) - Dynatrac Free-Spin Hub Conversion Kit - RETRAX bed cover - homebrew shaved bluetec badge - plugged up EGR - Baldwin BF1212 water separator and CAT 1R0750 fuel filter - MSD Dashhawk - Baldwin B164 Bypass Filter