Thought I would send an update on this project. Replaced rear brake lines ( Leaking ), Coil packs (One had Cracks in it ), Plugs (Old ), Plug Wires (Old ). Took off throttle body and cleaned out 20 years of gunk. Took off EGR cleaned it and all ports, lots of carbon. CAT is gone and replaced with straight pipe. Cleaned all sensors to throttle body and connections. Replaced front sway bar attachements and bushings( Cause they were gone ), Flushed engine and oil, also cooling system flush, ( Which produced a lot of greasy coolant.) I went ahead and used KW on it just for the ease of it to see what would happen. I now have no white puffs coming from the exhaust, and it runs awesome ! I am not sure if I had a head gasket leak or Intake leak, but it's working for now. Going to keep checking oil and coolant for cross contamination and see what happens. For now I think I am going to get some plates and start driving it to work and back and see what other curve balls she throws at me.