OK, I have put in the wires, plugs and air filter. Runs a lot better, stronger, faster.
I will have to say that some of the rough running/bad mileage was my fault. I checked all the old plugs as I was installing the new one and the poor things were shot! There was hardly any tip,(paper thin), left for the arc to go to, it is a wonder that the truck was running at all. The gap was WAY larger than what it was supposed to be. Plug wires was good, but I had to pull one of the boots off because someone had ran the wire behind a bracket(pass. side), that bolted snug up to the valve cover. Having a lift helped out mucho especially for the rearmost plug on the passenger side. Easy access through the wheel well. I will say this.... the brake booster was still VERY hot even after the motor had cooled off.