My K5 origionally was equiped with a 6.2 diesel. The previous owner had converted it to a 454. Now its past due for plates and i need to get emissions to get plates. I used to be able to register all of my junk in weld county but i dont no anyone up there any more. The state says I need: cat(s) The whole air injection system Fuel inlet restrictor valve. Does anyone have the parts needed to do this? or does anyone live in weld county?