Just to follow up on todays finding. I performed a dry compression test today and found front the front 4 cylinders have a psi of 150 and the back 2 are 140 psi.

 

Just to let those who helped with suggestions know, the problem ended up being the catalitic converter. For some reason today I decided to drill a hole into it and sure enough the truck tried to start up. I then totally cut out the converter and bypassed it and the truck runs like new. Hope this thread might help someone else in the future if there having simular problems.